I wouldn't recommend letting the download manager update your poser with a new service pack, unless they change how it behaves. It replaces all of your customizations, including those for EZSkin (and probably others). It's kind of annoying. Also, if you find it crashing after it tries to verify your S/N, it's probably because the number was invalid.

When I copied mine, apparently I had not copied one of the characters and it kept crashing. It wasn't until I went to the website and it complained about the S/N being invalid that I realized that I hadn't correctly copied the number over. Indiana Jones Movies. Anyway, in case you are ready to update, I thought you might like to be warned of these little details. I haven't really had a chance to really try out the new SP.

Hopefully it fixed the issues with M4 and super-conforming clothing. I believe it restores the stock customizations to maintain compatiblity with changes in the program. Otherwise you'd have legacy changes that no longer might work with a feature enhancment or fix. And then you'd still have to do a complete wipe and reinstall. You could always back up your changes, and then dump them back on top of a new update, but again, that might affect functionality. When I enter an invalid serial number I think mine quits as well. Thats not a crash though, thats a program exiting and install because of user error with an incorrect serial number.