diff --git a/ftl/qt/errors.ftl b/ftl/qt/errors.ftl
index e438d3b09..1b4e69236 100644
--- a/ftl/qt/errors.ftl
+++ b/ftl/qt/errors.ftl
@@ -1,4 +1,10 @@
 -errors-support-site = [support site](https://help.ankiweb.net)
+errors-standard-popup2 =
+    Anki encountered a problem. Please follow the troubleshooting steps.
+errors-may-be-addon = The problem may be caused by an add-on.
+errors-troubleshooting-button = Troubleshooting
+errors-copy-debug-info-button = Copy Debug Info
+errors-copied-to-clipboard = Copied to clipboard
 errors-standard-popup =
     # Error
     
diff --git a/proto/anki/links.proto b/proto/anki/links.proto
index 4d862adb9..dc3bd0552 100644
--- a/proto/anki/links.proto
+++ b/proto/anki/links.proto
@@ -42,6 +42,7 @@ message HelpPageLinkRequest {
     CARD_TYPE_MISSING_CLOZE = 20;
     CARD_TYPE_EXTRANEOUS_CLOZE = 21;
     CARD_TYPE_TEMPLATE_ERROR = 22;
+    TROUBLESHOOTING = 23;
   }
   HelpPage page = 1;
 }
diff --git a/qt/aqt/about.py b/qt/aqt/about.py
index 41be7d4a3..2b66fe734 100644
--- a/qt/aqt/about.py
+++ b/qt/aqt/about.py
@@ -2,12 +2,11 @@
 # License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
 import platform
-import time
 
 import aqt.forms
 from anki.lang import without_unicode_isolation
 from anki.utils import version_with_build
-from aqt.addons import AddonManager, AddonMeta
+from aqt.errors import addon_debug_info
 from aqt.qt import *
 from aqt.utils import disable_help_button, supportText, tooltip, tr
 
@@ -33,61 +32,15 @@ def show(mw: aqt.AnkiQt) -> QDialog:
     abt = aqt.forms.about.Ui_About()
     abt.setupUi(dialog)
 
-    # Copy debug info
-    ######################################################################
-
-    def addon_fmt(addmgr: AddonManager, addon: AddonMeta) -> str:
-        if addon.installed_at:
-            installed = time.strftime(
-                "%Y-%m-%dT%H:%M", time.localtime(addon.installed_at)
-            )
-        else:
-            installed = "0"
-        if addon.provided_name:
-            name = addon.provided_name
-        else:
-            name = "''"
-        user = addmgr.getConfig(addon.dir_name)
-        default = addmgr.addonConfigDefaults(addon.dir_name)
-        if user == default:
-            modified = "''"
-        else:
-            modified = "mod"
-        return f"{name} ['{addon.dir_name}', {installed}, '{addon.human_version}', {modified}]"
-
-    def onCopy() -> None:
-        addmgr = mw.addonManager
-        active = []
-        activeids = []
-        inactive = []
-        for addon in addmgr.all_addon_meta():
-            if addon.enabled:
-                active.append(addon_fmt(addmgr, addon))
-                if addon.ankiweb_id():
-                    activeids.append(addon.dir_name)
-            else:
-                inactive.append(addon_fmt(addmgr, addon))
-        newline = "\n"
-        info = f"""
-{supportText()}
-
-===Add-ons (active)===
-(add-on provided name [Add-on folder, installed at, version, is config changed])
-{newline.join(sorted(active))}
-
-===IDs of active AnkiWeb add-ons===
-{" ".join(activeids)}
-
-===Add-ons (inactive)===
-(add-on provided name [Add-on folder, installed at, version, is config changed])
-{newline.join(sorted(inactive))}
-"""
-        info = f"    {'    '.join(info.splitlines(True))}"
-        QApplication.clipboard().setText(info)
+    def on_copy() -> None:
+        txt = supportText()
+        if mw.addonManager.dirty:
+            txt += "\n" + addon_debug_info()
+        QApplication.clipboard().setText(txt)
         tooltip(tr.about_copied_to_clipboard(), parent=dialog)
 
     btn = QPushButton(tr.about_copy_debug_info())
-    qconnect(btn.clicked, onCopy)
+    qconnect(btn.clicked, on_copy)
     abt.buttonBox.addButton(btn, QDialogButtonBox.ButtonRole.ActionRole)
     abt.buttonBox.button(QDialogButtonBox.StandardButton.Ok).setFocus()
 
diff --git a/qt/aqt/errors.py b/qt/aqt/errors.py
index 47f89a631..608d1de5d 100644
--- a/qt/aqt/errors.py
+++ b/qt/aqt/errors.py
@@ -3,18 +3,18 @@
 
 from __future__ import annotations
 
-import html
 import re
-import sys
-import traceback
+import time
 from typing import TYPE_CHECKING, Optional, TextIO, cast
 
 from markdown import markdown
 
 import aqt
+from anki.collection import HelpPage
 from anki.errors import BackendError, Interrupted
+from aqt.addons import AddonManager, AddonMeta
 from aqt.qt import *
-from aqt.utils import showText, showWarning, supportText, tr
+from aqt.utils import openHelp, showWarning, supportText, tooltip, tr
 
 if TYPE_CHECKING:
     from aqt.main import AnkiQt
@@ -150,13 +150,14 @@ def is_chromium_cert_error(error: str) -> bool:
 if not os.environ.get("DEBUG"):
 
     def excepthook(etype, val, tb) -> None:  # type: ignore
-        sys.stderr.write(
-            "Caught exception:\n%s\n"
-            % ("".join(traceback.format_exception(etype, val, tb)))
-        )
+        sys.stderr.write("%s\n" % ("".join(traceback.format_exception(etype, val, tb))))
 
     sys.excepthook = excepthook
 
+# so we can be non-modal/non-blocking, without Python deallocating the message
+# box ahead of time
+_mbox: QMessageBox | None = None
+
 
 class ErrorHandler(QObject):
     "Catch stderr and write into buffer."
@@ -206,7 +207,7 @@ class ErrorHandler(QObject):
         if self.fatal_error_encountered:
             # suppress follow-up errors caused by the poisoned lock
             return
-        error = html.escape(self.pool)
+        error = self.pool
         self.pool = ""
         self.mw.progress.clear()
         if "AbortSchemaModification" in error:
@@ -230,40 +231,111 @@ class ErrorHandler(QObject):
         if is_chromium_cert_error(error):
             return
 
+        debug_text = supportText() + "\n" + error
+
         if "PanicException" in error:
             self.fatal_error_encountered = True
-            txt = markdown(
-                "**A fatal error occurred, and Anki must close. Please report this message on the forums.**"
-            )
-            error = f"{supportText() + self._addonText(error)}\n{error}"
-        elif self.mw.addonManager.dirty:
-            # Older translations include a link to the old discussions site; rewrite it to a newer one
-            message = tr.errors_addons_active_popup().replace(
-                "https://help.ankiweb.net/discussions/add-ons/",
-                "https://forums.ankiweb.net/c/add-ons/11",
-            )
-            txt = markdown(message)
-            error = f"{supportText() + self._addonText(error)}\n{error}"
+            # ensure no collection-related timers like backup fire
+            self.mw.col = None
+            user_text = "A fatal error occurred, and Anki must close. Please report this message on the forums."
         else:
-            txt = markdown(tr.errors_standard_popup())
-            error = f"{supportText()}\n{error}"
+            user_text = tr.errors_standard_popup2()
+            if self.mw.addonManager.dirty:
+                user_text += "\n\n" + self._addonText(error)
+                debug_text += addon_debug_info()
+
+        def show_troubleshooting():
+            openHelp(HelpPage.TROUBLESHOOTING)
+
+        def copy_debug_info():
+            QApplication.clipboard().setText(debug_text)
+            tooltip(tr.errors_copied_to_clipboard(), parent=_mbox)
+
+        global _mbox
+        _mbox = QMessageBox()
+        _mbox.setWindowTitle("Anki")
+        _mbox.setText(user_text)
+        _mbox.setIcon(QMessageBox.Icon.Warning)
+        _mbox.setTextFormat(Qt.TextFormat.PlainText)
+
+        troubleshooting = _mbox.addButton(
+            tr.errors_troubleshooting_button(), QMessageBox.ButtonRole.ActionRole
+        )
+        debug_info = _mbox.addButton(
+            tr.errors_copy_debug_info_button(), QMessageBox.ButtonRole.ActionRole
+        )
+        cancel = _mbox.addButton(QMessageBox.StandardButton.Cancel)
+        cancel.setText(tr.actions_close())
+
+        troubleshooting.disconnect()
+        troubleshooting.clicked.connect(show_troubleshooting)
+        debug_info.disconnect()
+        debug_info.clicked.connect(copy_debug_info)
 
-        # show dialog
-        txt = f"{txt}<div style='white-space: pre-wrap'>{error}</div>"
-        showText(txt, type="html", copyBtn=True)
         if self.fatal_error_encountered:
+            _mbox.exec()
             sys.exit(1)
+        else:
+            _mbox.show()
 
     def _addonText(self, error: str) -> str:
         matches = re.findall(r"addons21(/|\\)(.*?)(/|\\)", error)
         if not matches:
-            return ""
+            return tr.errors_may_be_addon()
         # reverse to list most likely suspect first, dict to deduplicate:
         addons = [
             aqt.mw.addonManager.addonName(i[1])
             for i in dict.fromkeys(reversed(matches))
         ]
-        # highlight importance of first add-on:
-        addons[0] = f"<b>{addons[0]}</b>"
         addons_str = ", ".join(addons)
-        return f"{tr.addons_possibly_involved(addons=addons_str)}\n"
+        return tr.addons_possibly_involved(addons=addons_str)
+
+
+def addon_fmt(addmgr: AddonManager, addon: AddonMeta) -> str:
+    if addon.installed_at:
+        installed = time.strftime("%Y-%m-%dT%H:%M", time.localtime(addon.installed_at))
+    else:
+        installed = "0"
+    if addon.provided_name:
+        name = addon.provided_name
+    else:
+        name = "''"
+    user = addmgr.getConfig(addon.dir_name)
+    default = addmgr.addonConfigDefaults(addon.dir_name)
+    if user == default:
+        modified = "''"
+    else:
+        modified = "mod"
+    return (
+        f"{name} ['{addon.dir_name}', {installed}, '{addon.human_version}', {modified}]"
+    )
+
+
+def addon_debug_info() -> str:
+    from aqt import mw
+
+    addmgr = mw.addonManager
+    active = []
+    activeids = []
+    inactive = []
+    for addon in addmgr.all_addon_meta():
+        if addon.enabled:
+            active.append(addon_fmt(addmgr, addon))
+            if addon.ankiweb_id():
+                activeids.append(addon.dir_name)
+        else:
+            inactive.append(addon_fmt(addmgr, addon))
+    newline = "\n"
+    info = f"""\
+===Add-ons (active)===
+(add-on provided name [Add-on folder, installed at, version, is config changed])
+{newline.join(sorted(active))}
+
+===IDs of active AnkiWeb add-ons===
+{" ".join(activeids)}
+
+===Add-ons (inactive)===
+(add-on provided name [Add-on folder, installed at, version, is config changed])
+{newline.join(sorted(inactive))}
+"""
+    return info
diff --git a/qt/aqt/utils.py b/qt/aqt/utils.py
index 360139447..6e69b7b9d 100644
--- a/qt/aqt/utils.py
+++ b/qt/aqt/utils.py
@@ -1098,39 +1098,23 @@ def add_ellipsis_to_action_label(*actions: QAction) -> None:
 
 def supportText() -> str:
     import platform
-    import time
 
     from aqt import mw
 
     platname = platform.platform()
 
-    def schedVer() -> str:
-        try:
-            if mw.col.v3_scheduler():
-                return "3"
-            else:
-                return str(mw.col.sched_ver())
-        except:
-            return "?"
-
-    lc = mw.pm.last_addon_update_check()
-    lcfmt = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(lc))
-
     return """\
-Anki {} Python {} Qt {} PyQt {}
+Anki {} {} {}
+Python {} Qt {} PyQt {}
 Platform: {}
-Flags: frz={} ao={} sv={}
-Add-ons, last update check: {}
 """.format(
         version_with_build(),
+        "(src)" if not getattr(sys, "frozen", False) else "",
+        "(ao)" if mw.addonManager.dirty else "",
         platform.python_version(),
         qVersion(),
         PYQT_VERSION_STR,
         platname,
-        getattr(sys, "frozen", False),
-        mw.addonManager.dirty,
-        schedVer(),
-        lcfmt,
     )
 
 
diff --git a/rslib/src/links.rs b/rslib/src/links.rs
index 2f39acd6c..90e8e9ae2 100644
--- a/rslib/src/links.rs
+++ b/rslib/src/links.rs
@@ -41,6 +41,7 @@ pub fn help_page_link_suffix(page: HelpPage) -> &'static str {
         HelpPage::CardTypeExtraneousCloze => {
             "templates/errors.html#cloze-filter-outside-cloze-notetype"
         }
+        HelpPage::Troubleshooting => "troubleshooting.html",
     }
 }