MNC patching error, game wont start

I was gifted Monday Night Combat over Steam, and I have been unable to get it to play. Attached are screen shots of all error messages, and the .log files.
PC specs are as follows:

OS: XP Home SP3
Processor: AMD Athlon 64 X2 dual core processor 5000+ 6.61 Ghz
Memory: 3GB RAM
Graphics: NVIDIA GeForce 9500 GT
Hard Drive: 118 GB free space
Anti-virus: Panda AVPro 2011
Only one user account, so I always have Admin privileges.

Problem:
When I try to start the game a "run as" message appears asking which user account to use to run the game. It has a check box to "protect my computer from unauthorized program activity."
EDIT: I've tried having the box both checked and unchecked, it doesn't change the results.

Clicking OK, the splash screen comes up and I receive an error message saying "failed to copy "file name" to "particular location", the system cannot find the path specified." Specific file and location are on screen shot. It's always the same file. I click OK, the splash screen closes, and I then get a message saying "patching failed. check http://support.uberent.com for solutions."

Here's a list of what I've tried to fix the problem:
1. Exit steam, re log in and relaunched the game
2. Verify integrity of game files, restart game
3. Manually installed support files
4. Disable anti virus before starting game
5. Uninstall game and reinstall. Both by deleting local content and just deleting the Monday Night combat folder (multiple times)
6. Deleted patches folder in steamapps and re-verified via steam
7. Launching directly from mnc.exe rather than Steam interface
8. Rebooting PC multiple times
EDIT:
9. reinstalling steam and game

Most of those steps have been tried at least twice.

If you need any further information, let me know.

I sent all this info to Uberent's support email, but I still haven't gotten a response after a month. So please get back to me if anyone can help. I'd really like to play this game with the friend that gave it to me. Thank you for your time and help with this issue.

Buy a 360.

If you don't have anything constructive or helpful to say about my problem, don't respond. Thank you.

try seeing if there is an administrator account on your PC that you didnt know about throught safe booting the computer is all i can say. it might be the case that that is the problem.

Thank you SO much! That was indeed the problem. I had no idea windows made a hidden admin account if you made your own user profile. I safe booted, logged into that account, and ran MNC. All the files then copied correctly and I can now play it from my own account. I still don't really understand the problem since my user account has admin privileges but whatever, I'm just glad it worked. I'll probably back up my files and delete my account and just run off the default admin account now so I don't run into any problems like this again. Thank you again for your advice.

Windows can be odd like that, i think it has to do with you giving permission to a program, but the patcher is a different program thats start with the first, and so wont have the permissions