Arduino compilation error

If I copy and paste the working blink sketch from Arduino IDE into SimulIDE I get this -

Error during sketch processing: stat /home/pete/snap/chromium
/1753/.themes: no such file or directory

What on earth is it doing poking around in there?

Hi.

If I copy and paste the working blink sketch from Arduino IDE into SimulIDE

Copy and paste into simulide?
Did you save it as an .ino file?
And.. did you save it in a folder with no other files in it?

What on earth is it doing poking around in there?

I have no idea.
Can you copy the whole compiling report and paste here?