I dont know anyone else who may be getting this issue. I have the EVGA GTX960 SC 4GB card. I updated to PXOC 607 and now when I enable KBoost (CTRL/SHIFT/Middle Mouse Click) then enable it, I get an unrecoverable error in pxoc stating "PrecisionX_x64 encountered an improper argument" - Anyone know what is going on here?
 
Tried the Uninstall/Reboot/Reinstall method - no luck.

leegreaves Welcome to the Forum
If you go back to Version 5.3.11 do you still get this error?

Im about to test that out. Will reply once I have tested it out.
 
Im going to do a reboot between uninstalling current version and installing prior version to ensure any remnants of present version are removed.

OK just went to put the previous version that you stated in your post and got a "1158" message come up. Nothing else just the number "1158:" and the "OK" button to click it off.
 
I believe other users have had this problem. I will check forums to see what solution I need to apply to install that version and once installed and working will let you know what happens.
 
*EDIT* I got the program to install by booting into minimal services and using compatibility by running the program In compatibility mode (Properties>>Compatibility>>Check marking "Windows 7" and "Run as Administrator").

Ok. Seems to me that this version works. I dont get the error as stated in OP. KBoost is now enabled and looks like to be functioning as intended. I will remain with this version until current version is updated to a version that does not replicate the error I was getting.

Base clock seems to be sitting comfortably at 1481MHz GPU Temp is sitting between 50 - 52 Celsius Voltage 1243mV Fan Speed seems to be sitting around 55-60% at approx between 1950 and 1990 RPM if set to auto fan control. GPU Clock offset is set at +89Mhz Mem clock Offset at +110Mhz Voltage is set at +31mV with Overvoltage/KBoost enabled. Power Target is set at 110% GPU and Temp Target set to 94 Celsius.

For me this version is what I will stay with on my None GTX 1xxx Cards.
Glad to here you are running ok now.

Yer dontk now what changes theyve done to the code for this to happen THOUGH it did work a few weeks back. So its more likely it is something else to do with my system that may have caused this issue rather than PXOC itself.