CITRIX reciever - SSL errors? (Android 3 ASUS EEE pad)

Hi,
This problem is well documented, but most people have not found any solution!

I have an EEE Pad transformer so running Android 3.

The CITRIX reciever app which works on all Apple devices (grrr!) is not working. The error when launching an app...

"SSL/TLS Error: You have not chosen to trust "USERTrust Legacy Secure Server CA", the issuer of the server's security certificate"

I have the certificate files from COMODO, and I have put all these files on the memory card, then tried installing them from the settings, it installs them, but I still get this error.

Any ideas? People have tried the same thing with phones, but there are no real answers? Can anybody help?

Thanks, Alan