minor Bug: Set compiler path befor saving code file

When setting the compiler path before saving the first code file nothing is happening. After saving the correct "Select compiler path directory" is shown. Either a error msg or the selection window would be great.

Yes, something missing here, probably show a dialog informing about the issue.

A "compiler path" is tied to a type of source, which is recognized by extension.
Before saving the document simulide doesn't know which kind of source is there.