Thank you Cotty, I did it, now it is perfect!

How can I do that? I can not choose either at downloading, installing or starting the program. I am the administrator and only user of my computer.

I have reinstalled and installed 5 times everything. I made "housekeeping", now I have free space. But I get this warning anyway all the time. I can continue use Sketchup, it is only irritating. I have not installed any plugins, I did not installed or saved any other folders, it is a brandnew Sketchup Make. Have you any more advice?

Is there any solution?

Excuse me, not "maps", I mean folders.

Is it possible that I get this message because of my hard disc is almost full?

It is default, full permissions, I did not change anything. I have not any other maps, I did not use this version yet. I had Sketchup 8 before, but I used it very infrequently.

I get all the time this warning: "Unable to update the evaluation time. Make sure that C:\ProgramData\SketchUp 2013\SketchUp13If is writable". First I could open it, I saw that it was not ticked anywhere to make it unwritable. Now I ticked it somewhere to make it more available. I don't remember where, and I am unable to open this file. What can I do?

Thank you, Shepherd, I'll do so.

I had an older Sketchup, now the new is installed and it works! Thank you!