FTX Central should look like this when you open it. You can use the windows controls in the upper right corner, like any other window, to go to full screen but this won't increase the text size for reading.

Not sure what you mean by 'FTX Central at the bottom of the screen'. Are you referring to a 'shortcut' on the desktop? In any case, FSX must be shut down before running FTX Central.
I see you do not have UTX USA as I thought. Your UTX Canada should not be involved with the 'marina' problem at Friday Harbour. But I still suspect a terrain or mesh conflict is causing the problem. Do you have any other terrain or mesh addons installed that include this area? (These could include terrain or mesh addons or scenery addons that have their own terrain or mesh components.) If so, try temporarily disabling the addons in the Scenery Libray and see if that fixes the problem.
If you could post a screenshot from the same perspective as mine it might help.
I don't think the 'marina' problem has anything to do with the other problems your having.
When closing out I got....
Microsoft NetFlix Error...
Just in time...JIT...Debugging Error.... Again....
I'm guessing you meant a 'Microsoft .net' error. Many programs, including REX, require the 'Microsoft .net framework'. I can't give any advice on this except to use Windows Update the ensure you have the latest updates for .net.
Don't have a clue about the Logbook problem, I never use it.
Dave
After thought: Open the......\
\ORBX\User Documents\Versions\FTX_NA_PNW.txt file. If the version listed is less than ... V1.0 PATCH 005... you can download the patch here-http://fullterrain.com/support.html. Don't know that it will fix this problem, but provides many fixes and enhancements to the original release.
At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation.