X-10 Learning Problem

I have X10 codes in my MX-800 Remote. It sends out very short bursts, and the UIRT will not even learn them at all. The green progress bar doesn't even go 10% of the way.
Someone suggested importing Pronto codes. So, I downloaded a Pronto CCF file, but it's binary, and Girder wants me to paste in the codes.
What do I need to do? Do I have to purchase a different remote?
Someone suggested importing Pronto codes. So, I downloaded a Pronto CCF file, but it's binary, and Girder wants me to paste in the codes.
What do I need to do? Do I have to purchase a different remote?