Judging by your log file you are most certainly exceeding the limits of your hardware.
Even SkyMaxx Pro is warning you in the log file...
SkyMaxx Pro: WARNING! CPU free memory at 21840 KB. X-Plane may crash due to lack of memory. Close other applications, reset your settings, or remove memory-intensive add-ons such as photo-scenery.
Try running the TBM with all your plugins removed (not disabled) except Gizmo and see if it's still behaving like this. If not add your plugins back one by one until you find a possible culprit.