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We are on an older version of FileVista that has worked well for us for quite a while, but all of sudden our users are getting errors when uploading to us. The error is the following:
System.ArguementOutOfRangeException: Index was out of range. Must be a non-negative and less than the size of the collection.
There is more, but I'm aware that this error is apparently caused due to the file failing to upload and then the system looking for the file and not finding it (thus the non-negative reference in the error). We also have a few customers that are uploading to us, the status bar show it complete, but the status bar never goes away and the file never ends up on our site.
Small files (less than 100KB) seem to upload fine, and we've found that upgrading users to IE11 or 12 or changing them to Chrome seems to help.
We have made no changes in our system to cause this, do you have any ideas or suggestions on where to look for a solution?