A full stack trace isn't going to help you. I've already spent the time debugging this and have explained why the problem is happening in detail. Please simply refer back to the first post in this thread.
If you would like to reproduce the problem for yourself, simply restart the application pool which is hosting the demo site. As long as "overlapped recycle" is enabled (which it is by default) you will be able to reproduce the problem.
Make sure your DLL's are not read-only.
They are not readonly.
They are not marked as unsafe.
Full permissions are granted to the EVERYONE group to the entire folder.
I tried this and no longer get the errors but I cannot install any plugins now. If I upload the list reloads and there is nothing there. I check via FTP and it looks like the upload didn't happen. If I manually upload the plugin it won't show up in the list. I've restarted the application via the Administration screen - I'll restart the Azure app service and see if it works.
But I have been having this problem too and it is preventing us from upgrading to 4.00.
Well I just noticed it shows 4.10 in the Admin screen - so of course none of those plugins are going to show up or get installed. So is this fix a patch for 4.00 or is it truly a 4.10? Because I need this to work for 4.00 and my Nop-Templates theme and plugins are set to work with 4.00 not 4.10
So to answer my own question - this is truly the next 4.10 version and will break with plugins built for 4.00.
I changed the nop version to 4.00 and updated the included plugins to support 4.00 from 4.10 - and that breaks completely.
To test I tried including the MailChimp plugin that works for 4.00. It kills the site.
Come on guys - this is a serious problem. If you are wanting us to test code you checked in at least branch it off the 4.00 release and let us test that (since that is what is in production). That is not a good solution to give a branch off the actively developed 4.10 line of code.