Rapidshare Paragon Gpt Loader

Background:
system is dual boot: win XP 32bit & win-7 64
file system is ntfs for both systems
hard drives have been upgraded from multiple 2tb to multiple 4tb
primarily large video files & photo's.
All folders are hashed md5
The drives in question are all GPT, single partition storage drives.
GPT loader installed without problems and lets XP see full capacity of each drive (3.63tb ea.)
Data was copied thru both XP & Win7 (at different times) and defragged thru Win7 64bit
After each copy, a bit compare was done and all hashes verified. A caveat is that when I copied and verified each transfer, it was within the same OS. What I didn't realize was that XP, using the GPT loader wouldn't see the data as it appeared to Win-7. Which brings me to the point of this post...
Problem: XP doesn't see the videos properly which were copied using Win-7. The md5's fails, and attempts to play the video brings up the wrong video. In addition, parts of other videos play through out the showing... like something pieced parts of multiple videos together and linked it to a title. This only happen with the videos that were copied under Win-7 and played under XP. Thankfully, if Win-7 is booted, the video plays fine and the hash passes.
The 2tb drives are kept as backup, so I still have access to the original files... but to Win-7, all the data is fine. However, XP is my OS of preference, and the point in using GPT Loader was that XP could remain my primary system.
Before I start to recopy everything thru XP, it seems prudent to understand what is going on such that I'm not creating a problem for the future. I'm also continuing to explore... so if my understanding of anything stated here changes, I'll be certain to edit/re-post. Meanwhile...
Any idea's as to why or what is happening?
Does the absence of the 128mb mini partition factor into GPT Loader's functionality?
Thanks for any input or reply. All assistance is appreciated.

Background:
system is dual boot: win XP 32bit & win-7 64
file system is ntfs for both systems
hard drives have been upgraded from multiple 2tb to multiple 4tb
primarily large video files & photo's.
All folders are hashed md5
The drives in question are all GPT, single partition storage drives.
GPT loader installed without problems and lets XP see full capacity of each drive (3.63tb ea.)
Data was copied thru both XP & Win7 (at different times) and defragged thru Win7 64bit
After each copy, a bit compare was done and all hashes verified. A caveat is that when I copied and verified each transfer, it was within the same OS. What I didn't realize was that XP, using the GPT loader wouldn't see the data as it appeared to Win-7. Which brings me to the point of this post...
Problem: XP doesn't see the videos properly which were copied using Win-7. The md5's fails, and attempts to play the video brings up the wrong video. In addition, parts of other videos play through out the showing... like something pieced parts of multiple videos together and linked it to a title. This only happen with the videos that were copied under Win-7 and played under XP. Thankfully, if Win-7 is booted, the video plays fine and the hash passes.
The 2tb drives are kept as backup, so I still have access to the original files... but to Win-7, all the data is fine. However, XP is my OS of preference, and the point in using GPT Loader was that XP could remain my primary system.
Before I start to recopy everything thru XP, it seems prudent to understand what is going on such that I'm not creating a problem for the future. I'm also continuing to explore... so if my understanding of anything stated here changes, I'll be certain to edit/re-post. Meanwhile...
Any idea's as to why or what is happening?
Does the absence of the 128mb mini partition factor into GPT Loader's functionality?
Thanks for any input or reply. All assistance is appreciated.