Global symbol "$regExp" requires explicit package

[jmgdesignlab]

Hello All,
I am trying to install on an EC2 instance using Cent OS 5.5. Everything goes well during installation until I get to this command:
'perl ispcp-setup'

It throws this error message:
Global symbol "$regExp" requires explicit package name at ispcp-setup line 65.
Global symbol "$regExp" requires explicit package name at ispcp-setup line 67.
Execution of ispcp-setup aborted due to compilation errors.

I've spent several hours trying to find a work-around or the source of the problem with no luck. I really appreciate any help that anyone can give.

Thanks,
John