Problem with .B5T or .B5I files

[Shockrave]

Hi guys, I have a problem playing my Blind Write files. I tried to mount it but I get the message "Unable to Mount Image. Invalid image type". This to me seems odd cause .b5t is under one of the file types that could be recognised in the drop down list.

Also, both my .b5I and .b5T are the same name and have not been renamed.

Any ideas?