when i try to use the button in the rich text editor that would generate the short code for the WordPress Simple Paypal Shopping Cart plugin i get this msg:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at postmaster@(...) to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.
Any help would be appreciated