FSUIPC4.92 is now out.
With one possible exception few will see any benefits.
Version 4.92 (September 2013)
1 Fixes a possible FS freeze when changing aircraft if an [Auto] section invokes a Lua plug-in. This problem was introduced by an omission in bug fix #5 in version 4.91.
2 Added more options to the L:Var setting facilities in Macros. You can now set and clear bits using the parameter as a mask. This is described in the Advanced User's manual.
3 Fixed a problem introduced in 4.91 where joystick axes and buttons might not be recognised at all if FSX/P3D is run on XP or in XP Compatibility Mode.
4. Added an additional parameter facility for the AutoScanDevices option:
AutoScanDevices=Never
will stop FSUIPC ever re-initialising and rescanning devices after first loading. It is hoped that this might get over one of the quirks which Windows 8 seems to afflict upon joystick users.
ALWAYS REMEMBER TO BURN A COPY OF THE LATEST WORKING VERSION.