No need for the sighs, peeps often come to me with these kind of issues and that's pretty much the startup dialogue I use as most peeps just fail to install properly even with the installation video that I made + the written description included in the download.
Well if it ain't that:
1. Do you have any other custom content installed for BL? (Conflicting .upk's so to speak)
2. Are you using the latest patch? And have you made sure that you don't have previous patch installations still on your system?
3. How many weapons/items does the character you use for the acquirement of my stuff have in his/her inventory? If it exceeds somewhat of 2500-5000 items (depending on the spec's of your system) that might cause it.
4. Do you get a error message upon crash? If so can you send me a picture?