Today, we released iFly GPS 11.0.62 to resolve previous version 11 issues with crashes/issues.
http://www.iflygps.com/WindowsDownload
If you have prior version 11, please upgrade to this latest release.
If you haven't upgraded yet to version 11, you might want to stick with version 10.3 for a while longer, while we resolve these version 11 issues.
We do believe that version 11.0.62 released today has a good chance of resolving the issues experienced with version 11. The worst issue we've had with version 11 on Windows is that it was running for two weeks, and then just stopped working. The 11.0.62 installer was modified in attempt to overcome this issue. If it does fail again, the 11.0.62 logging was upgraded to provide us with more detail about the root cause.