Error when trying to save Crystal Report back into SAP

Hi,

I'm running SAP B1 9.1 PL 8 and crystal reports 2013. From within SAP I click edit on the report and layout manager and report will open in crystal. I modify it but when I try to save it back into SAP I get an error message as below

I can preview in SAP from crystal, just not save

This is also happening on another pc I've tried

Thanks

Carl