Hello Cyounkins,
I apologize, this appears to be a limitation that was arbitrarily set. If you email me I can send you a version of the software which has this limitation removed. Email me at aj@signalhound.com.
Make sure the latest version is installed (3.0.11) and I will send you a new file for the fix. Let me know if you install the 32-bit or 64-bit version.
Regards,
A.J.