Thank you for the post.
So far I have not been able to reproduce with only a single plugin installed in both locations. If you pull all the plugins and put the two copies back in both locations one plugin at a time, does a particular plugin or group of plugins trigger the crash? The goal is to determine which specific plugins trigger this behavior.
I have tested again by adding plugins one by one to both locations (see below) and for whatever reason, am unable to reproduce the crashing again./Users/username/Library/Application Support/FileMaker/FileMaker Pro Advanced/12.0/Extensions//Users/username/Library/Application Support/FileMaker/Extensions/If you refer to the FM Techical Network forums, there is a thread that references this issue. https://fmdev.filemaker.com/message/100728#100728One person tracked the crashing down to the Troi Activator plugin, while another pinned it to the 2empowerFM suite of plugins. I do not have the Troi plugin, but do use the 2empowerFM plugins. I thought for sure that when I tested again, the 2empowerFM plugins would cause my crash, but they did not. So, not sure where to go from here. There seems to be an issue, but perhaps random in nature. I have installed the 2empowerFM plugins in both locations and will monitor how things go.FYI, the 2empowerFM plugins I have are:2empowerFM - v2.362empowerFM_Developer_Assistant - v2.662empowerFM_Clipboard_Explorer - v2.542empowerFM_SQL_Runner - v2.54Let me know if you need further info or want me to do any additional specific testing.Thanks,Doug