I hope I’m not just reposting anything but I have not seen the same issue as I’m having. I downloaded the toolbox and was able to use it yesterday to test the .tif conversion… worked great. This morning it started giving me errors and deactivating the add-on.
Now every time I try to install or activate it I get the message… “An unhandled exception occurred in your application. Contact your administrator or the author of this document for further assistance.”
Tried it on a second computer and it is doing the same thing, but this one didn’t even get one use out of it first.
I’m having what is probably a related problem using Excel 365 with Windows 10. When I try to install the latest version update, I get an error message that says that ToolBox doesn’t work with Excel 365. However, the previously installed version is still working just fine … I just can’t update it.
Could you please provide further information on the XL Toolbox version you are using? A couple of days ago I released 7.3.3 which unfortunately crashes on startup, and it’s not so easy to fix the problem. The download link on www.xltoolbox.net points to 7.3.2 however, which should work.
I have the Toolbox running on Excel 365/Windows 10 without problems, which means I need more information to be able to find out what the problem is with your setups.