Hate to tell you this, but I also can't save proxy port with this version either. Keeps coming up blank. I ran the gconftool command you noted and it saved and worked fine after that. So, the work around works, but the config dialog is still busted.

I also had a launch issue after the initial update. I was one of those that took the advice to link the ~/.fmms/mms folder into MyDocs, so I could access the files from MMS on the shared folder. Turns out that breaks fMMS in this version if you did that. The error I was getting by running the command line in xterm was something along the lines of "mkdir(): directory already exists". I'm betting you're checking for if it's a directory, and finding it's a link, and trying to do a mkdir. Once I unlinked and moved it back it launched fine.

I also noted that when I first configed it made a new MMS access point, which breaks things for me a little. Since the settings are 100% identical to my existing connection, I have two identical cell APNs. This means if I try to run Havoc mode, even if I'm already connected to my normal APN, it spins up another connection (grps2) to use for the mms. This seems to not work and causes it to not work in Havoc mode on my device (Rude mode works ok though). Maybe you should check for that (existing APN = MMS APN) and not set one up in that case?