Thank you for the post.
Development and Testing are aware of this issue. Another user also reported this here:
Knowledge base article 10097, Installing and updating plug-ins in FileMaker Pro states:
"Plug-ins installed in the old location still work and take precedence of ones stored in the new location. This is due in part to the new location not being aware of different versions of FileMaker being installed on the system. If a specific solution requires a specific version of a plug-in, FileMaker checks the EXTENSIONS folder inside the application directory first before looking for the plug-in in the new location."
The way I understand the issue is that if FileMaker loads particular plugins twice, the FileMaker application will crash. This doesn't happen with all plugins, so we know the issue resides within the design of those particular plugins.
The plugins designed by FileMaker and installed with FileMaker Pro 12 do not cause this issue even if installed to both locations.
For issues caused by third party plugins, contact the plugin developer as their plugin may need to be updated.
The two reports I've looked at both report this for Macs. Does it also happen in windows?
The only reports at this time are on Mac; however, I have not personally been able to duplicate a crash on either operating system.
I'll list this one as I currently have it then as being found on Macs, but without the "only" designation unless/until I see a post that references Windows...
This post has now been added to the Known Bugs List. Please see the first post of the thread before posting any comments to the list.