thanks for reply and that is what I thought how it should work but it doesn't...
For example, I have copied the file 'calculator.oar' to the internal memory but when I click on it the "running circle" appears busy for 2 seconds, disappears and the file folder appears as before.
It seems somehow that the program start launching but cancels for what reason ever (permission issues, missing files needed...)
Do I have to login somewhere as administrator to run/install third party software?
Thanks for help