path too long

Hi

I am having that problem for a while. In MS once you create nested folders there is a limit in the path length (probably 256 chars). Two problems:
1. Is there any way to solve it except moving the folders time to time up in the tree?
2. Once I have this problem (at least I thinkg this is the case, the pic belowe with the error message), how to correct it? I cannot identify so far which directory is "too far" and the error somehow prevents to copy/move documents within the project.

Best

Lukasz