So,
here is what happens:
Collabtive 2.0 adds
AES encryption of uploaded files.
When you update from 1.2 to 2.0, all files previously uploaded will be encrypted.
This means that file access through
any file manager (cpanel, ftp, etc) will not work.
They will only see the encrypted file, and not be able to read it. Hence the message about a "corrupted" file.
The only thing that will work is:
* Log in to Collabtive
* Go to a project
* Click on the files tab
* Click on a file
the file will then be decrypted
by Collabtive and the decrypted file sent to the browser for download.
Known bugs:
* E-mail notifications send out wrong links to uploaded files. this will be fixed next release.
* Upload not working correctly in Internet Explorer 9 or below. Fixed in next release.