Skyline can take a while to get anything showing on screen, especially when the user double-clicks a file in Windows Explorer. In general, it is probably time we did a start-up time performance analysis, and specifically, we should look into some cleaver way to get Skyline showing at least a blank document, if a double-clicked document takes too long to load (e.g. use LongWaitDlg or some nice splashscreen variant of it to load the file on disk to SrmDocument, so that a form pops up after a short while, if the document cannot be loaded quickly enough).

Don did a round of profiling and work on this to fix any obvious issues. Further progress would take considerable work, not scheduled at the moment.