Ah, I had nearly forgotten the code fixes. Here's the corrected file.

When you get it, you'll need to rename it to uc_importer.module and replace the module file you already have. Then, you should disable and re-enable it to make sure Drupal loads the correct thing. You were getting an error because it was still using the 5-only version.

Also, pathauto seems to be kind of broken. We'll forgive them because it's still in beta, but you might want to stick with previous versions until it gets sorted out.