The cause of the problem may be a missing or corrupt resource file. (GlobalResources.resx)

For some reason when I FTPd the 3.3.5 upgrade to my ISP some files including the one in question were truncated to 0 bytes in length.

When adding someone to a new role a message is sent by the system. The subject of the message is pulled from the resource file. Since the file was empty the subject was null which caused an error to be thrown.

The error was thrown before the logging took place so there never was an error logged. (Probably should change that code for future release...)

This problem would only start showing in this way at the 3.3.5 upgrade. A check for whitespace routine was added at 3.3.5.

Placing a new copy of the resource file out on my site cured the problem.

John