I've been working with a calendar control in a sheet, but many times it
desapears and when i try to use the control, it send me the error 'Can´t
find proyect oy library' in line Calendar1.visible=True.

When i try to insert again the control, it doesn´t appears in the More
Controls option. I have observed that the problem is with my user profile
since with another user and the same sheet it works without a problem.
Finally, I have finished installing the operating system in 2 occasions to
correct the problem, but I do not believe that it is the real solution.

Any one to help me?