So far I've imported Nintendo, Super Nintendo, Famicom, Super Famicom, and Sega Genesis full rom sets with no issue. The freeze first happened before when I tried to import my Sega Game Gear games. It got all the way down to W and just hard froze while downloading one of the media files for a game. I thought there might be an issue with that game, but that wasn't it. Since the import failed, it didn't even show the new platform under Handheld. But I knoew the images downloaded, so I was able to work around it by importing just the roms that it had already downloaded the media for and choosing not to download the media again. That worked, and now that Game Gear was showing up under Handhelds, I just imported the few games that were left (including the one it crashed on) with no issues. This was easy due to the fact that it doesn't move the roms out of your working folder until the media finished downloaded.
Well now I'm importing my MAME set. It is a merged 0.217 full set. I was hoping that was an isolated incident, but it has frozen again downloading the ad flyer for gunforceu. When this happens, I can still use launchbox normally, start games, etc. The progress bar is just frozen there forever and any attempts to start a new process like importing give the "You already have a process running" error. I don't think my workaround for Game Gear will work here, because as you know MAME files are dependent on each other and should be imported as a full set.
I highly doubt there is an issue with gunforceu. I had no issues importing the game that crashed before, so it seems something else is locking it up. Searching the Launchbox directory revealed a Logs directory but it was empty so no help there. As for power settings, I have it set to never put the computer to sleep and turn off the monitor after 30 minutes. There is also a setting to turn off hard drives after 20 minutes of inactivity, but it won't turn them off when in use and I have left it inactive for longer than that without causing an issue.
Anyone else having this issue? I'm thinking maybe I might have to import the MAME set without downloading media and then do it later, but that sounds like it could be a real pain. Any help would be appreciated.