If your Gigapixel is crashing at 1% it may be because there are special characters in your filename.
We have not yet updated all of libraries to support international character sets.
You have two options to get your Gigapixel back up and running.
1. Rename your user account to have no special characters in it.
2. Create a new user with no special characters in the username and run Gigapixel only from that username
This is kind of a pain because you are going to have a new account that you will use just to run Gigapixel for until we get out a fix for this, so you are probably better off going with option 1. But just in case you prefer this method, here are links to the instructions for how to do that.