Library Mangar: Fatal disk error

Good morning,

I get this error at runtime when I try to open a window. The message is "Fatal disk error. Retry?". I have to cancel 2 or 3 times this error message and the window opens on the end. Inside Power Bulder 11 everithing goes well.

I would like to know I can i get more informations about this error message because I don't know what problem is referred to.

Thanks,

Marco