A fresh download.. un zip.. and a shortcut to my desktop works for me. As a "*.scr" file I get a security popup asking if I want to run this file. Perhaps your version of Windows has a security setting to dis allow running *.scr files. Just as a test rename it with an EXE extension and see if it runs..You may have the scr extension designated for something else
Nope. This is a
BUG.
Clicking on the .scr file gives a message
"The publisher could not be verified. Are you sure you want to run this software?"
Renaming it to .exe does not change the symptom.,
Placing the file in \Windows\System32 and clicking on the
desktop icon to run the simulation results in the
same message.
Note 1: It runs without the message as a screensaver - but I'm confident that isn't what is wanted.
Note 2: This download isn't an installer version, so who knows...
Note 3: Windows 7, 32-bit.