I don't know why, but the generated Pronto hex you've posted is not RC5.
Here's the correct output from MakeHex:
Device Code: 10 (0x0A) Function: 12 (0x0C)
0000 0073 0000 000A 0020 0020 0040 0020 0020 0040 0040 0040 0040 0020 0020 0020 0020 0040 0020 0020 0040 0020 0020 0CC5
You can see that the durations listed are very close to your learned signal.
Your generated Hex is:
0000 0073 0000 000F 0040 0020 0020 0020 0020 0040 0040 0040 0040 00C0 0020 0020 0020 0020 0020 0020 0020 0020 0020 0020 0040 0020 0020 0040 0020 0020 0040 0020 0020 0AC4
It is not a recognizable IR protocol.
I recommend using the
MakeHex GUI as a frontend to
MakeHex. Probably a good idea to download MakeHex again also in case the irp files are corrupted in some way.