I recently faced a problem when I tried to create a folder, which was more then 256 characters in length. On making some investigation I found that the Windows have limitation on how many characters it can accomodate in the FilePath.
I tried to manually create a folder with more than 256 characters but could not. It will throw "Destination path too long" Error.
I believe OS forces individual programmer not to build in dept folder hierarchies
More details refere to this link : www.codinghorror.com/.../filesystem-paths-how-long-is-too-long.html
I had the similar problem and faced it a lot of times. I often solve this type of problems using "Long Path Tool". It helped me in solving this error and all related errors.