How come that it look like this when a draw a rectangle and use the snap function?

The drawing show clearly that the rectangle is not to the snap points.

I can also see this when i transfer documents .S01 files between computers, for instances a make the major drawing at the office and out in the field on the same drawing i make som adjustments and it shows up like this also

Best regards Robert

Although we can see the problem in your .doc file, we cannot reproduce the issue.  Can you check that you are using the latest version of Stardraw AV?

If the problem persists, please zip up and post the .S01 file, or email it to techsupport@stardraw.com

Yes, this would explain it.  When the original rectangle is drawn it will sit on the grid, but if you resize it using its properties sheet or through the command line, then the center point remains stationary and the corners will be pushed off the grid, unless of course the change is an increment of exactly 2x grid size.

Grid settings are stored in the document, not the application.