STFax very unstable :(

[AmigaMance]

Hi.
 I installed the freeware version of STFax 4 from Aminet and then i upgraded it to version 4.1. The problem is that it is ridiculously unstable on my system. (Amiga 1200, BPPC 68040, BVision, Serial modem connected to SilverSurfer, OS 3.9) It hangs frequently. Sometimes while just browsing the preferences window, sometimes while trying to open another window and everytime i'm trying to send a fax.
 I haven't manage to send a fax yet because of this. It dials the fax number, the fax machine of the other peer responds but then STFax hangs immediately after this. Therefore, the fax that i'm trying to send never reaches the recipient.
 So.. i would like to make some questions to anyone who has ever used his Amiga as a fax machine:
 Have you experienced similar problems with STFax?
 Have you found a way to fix this?
 Are older versions of STFax more stable?
 Are there any decent alternatives to STFax (preferably free) that i could try? (AOS 3 or MOS)

   Thank you!

[AmigaMance]

 Thank you all for your feedback!
 It seems that there something wrong with my setup since nobody reported any problems.

@Castellen
 I doubt that there is something wrong with my MUI installation since i don't have problems with other MUI apps, but i will try to send a fax under MorphOS with the latest MUI4 beta installed and see what will happen.
 Edit: Tried it, but without sending the fax yet. I get some hits from the task "STFax_spooler" (or something) on startup and it hangs while i try to quit... It can not be a fault of MUI then.
 Furthermore, failing to work properly on both OS's, indicates a hardware problem, imho.

@wurzel
 I have already ran snoopdos and it doesn't report any missing system file.

 I wonder if the SilverSurfer port or the Modem could cause such behaviour?... They work as they should on accessing the internet, though.. :-?

[AmigaMance]

Hi wurzel.

Did you manage to sort your problem?

I'd be interested to know

 No.. :-( Things with STFax are still as i have described them. No luck with MorphOS either in where i have MUI4 installed!
 Let me answer your previous questions:

Time to check your STFax settings, to make sure you're sending it to the correct modem device (mine's serial.device, if you use silversurfer, it would be different), baud rate etc is all correct.

 I have set the device and device number correctly. Otherwise STFax will complain that it can't find modem or something from the beginning.

Do you have the Init string set up correctly for your modem?

 I have tried the default init string of STFax and the factory default of the modem. (AT&F)

Are your timeouts correct (default seeting is usually best).

 If you mean the timeout values in STFax preferences, i have tried the defaults and the tried to increase them a bit.
 Nothing of the above works. Perhaps i will try my spare modem when i have time.