Hi Jon.
I've been a grateful user of your simulator mod for a while now.
I just upgraded to the latest PEP (2.4.18) and latest Pronto firmware (7.2.22-1.3.18) and re-applied the changes from the last version of your mod that I had available (1.31).
I found that an FTP script that I wrote earlier in the year (just to pull a txt file from the Aus Bureau of Meteorology) no longer works in the simulator. At first I assumed it was a difference in the way the sockets worked in the new Pronto firmware, but I discovered that it still works fine on the Pronto itself.
Not sure if it's any use for developing your latest version, but here's the bit of the module if it helps:
[Link: rohansplace.com]Didn't have a lot of time to investigate, but I think it's handling the received data that have not been completely read out a bit differently.
Cheers.