This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Thunderbird crash when attaching file to forwarded message

  • 4 replies
  • 2 have this problem
  • 2 views
  • Last reply by CommPlnSrv

more options

Thunderbird crashes to desktop when I try to attach a file to a message that I'm forwarding. Crash happens as soon as I hit the attach button. I found I can click the dropdown arrow next to the attach button and choose "File(s)..." to prevent the crash. This crash started on the release version of Thunderbird 45.2.0, and remained after installing the beta version 47. Running windows 10, AVG antivirus email scan has been turned off.

Thunderbird crashes to desktop when I try to attach a file to a message that I'm forwarding. Crash happens as soon as I hit the attach button. I found I can click the dropdown arrow next to the attach button and choose "File(s)..." to prevent the crash. This crash started on the release version of Thunderbird 45.2.0, and remained after installing the beta version 47. Running windows 10, AVG antivirus email scan has been turned off.

Chosen solution

Thank you for the help. I renamed AcSignCore.dll to AcSignCore.dll.bak But when I tried to open AutoCAD I received an error with AcSign.arx I renamed AcSign.arx to AcSign.old AutoCAD then opened and operated normally.

By renaming AcSignCore.dll this stopped the Thunderbird crashes when attaching files.

Thunderbird and AutoCAD are working great. Thanks again for all the help.

Read this answer in context 👍 0

All Replies (4)

more options

Email scan is off, but attaching files is not email :)

What are the crash id's? https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb#w_viewing-crash-reports

more options

Thanks for the response. I have many crash id's so I won't post them all.

bp-dc9772ae-43f8-41ac-9143-c83152160825 bp-0a282b37-1fc4-4c7c-9dd2-989222160825 bp-a8f29ea1-16e8-4218-968f-81e202160825 bp-e9345a6b-015c-4e3e-8135-b18102160825 bp-2ec71dc5-dcb8-40ee-9864-bbc232160825 bp-a57d883a-48a6-434c-96b1-a59632160825 bp-f7dfd216-9f74-43b3-ad2a-046f82160825

more options

I just looked at the first crash, I assume the rest will be the same.

The crash is in acsigncore16.dll As best I can establish this is a component of AutoCad / Auto Desk V16 that attaches itself to the Windows core DLLs to put an icon for signatures somewhere.

Given that Versions of this software is prior to 2012 it is not compatible with Windows 10, I suggest you either update or remove the software. https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Windows-10-support-for-Autodesk-products.html

Modified by Matt

more options

Chosen Solution

Thank you for the help. I renamed AcSignCore.dll to AcSignCore.dll.bak But when I tried to open AutoCAD I received an error with AcSign.arx I renamed AcSign.arx to AcSign.old AutoCAD then opened and operated normally.

By renaming AcSignCore.dll this stopped the Thunderbird crashes when attaching files.

Thunderbird and AutoCAD are working great. Thanks again for all the help.