Hi there,
While I do not think this issue is directly caused by a bug in your product, I hope you could give me any support in identifying the possible cause of the issue that I experience exclusively with your product and with another addon (FSPS Ultimate Checklist).
This issue is present after reinstalling FSX (Deluxe + SP1 & SP2) end of December on an almost fresh (end of November) Win7 64bit installation. Never had that before with previous hardware and same OS & FSX addons.
In EFB FSX hangs after a random number of SID/STAR activation. Exactly when I use the "activate" button of the display unit.
The other situation that causes FSX to go in AppHangB1 is with Ultimate Checklist. This addon has the ability to "connect" to FSX in order to intercept key presses (defined in FSUIPC as Offset Byte Setbits controls) to advance checklist items and show the "progressed" check list in FSX in a LUA window. The crash happens after a random (a few, between 2 and 5-7 max) number of keypresses, exactly after the external app receives the command and therefore just before the LUA display is updated.
If I avoid doing these 2 specific things I can anyway fly with no issues with both addons running, as well as with any other addon (FlightSim Commander, FSCaptian, OpusFSX).
Please note that I already tried a few things more or less related: uiautomationcore.dll fix; disabling Windows firewall & MSES antivirus; a complete FSX disintall, registry clean and following reinstall of FSX, with just FSUIPC and FSPS Ultimate Checklist installed - with the basic fsx.cfg generated after the installation; check of FSUIPC and SimConnect log files (no errors shown)....
Basing on the specs of how the problem arises with EFB are you able to point me in a good direction to try identify the common cause of this issue?