V1.3 757 FMC/MCP Landing Procedure

[sab12 6]

I have just updated to the v1.3 757 and am having a problem which I don't recall having with v1.2.During landing, I get to the point where I want to use the speed selector to take over managing the airspeed part of the approach with no problem. However, when I use the speed selector, its setting seems to be ignored and the airspeed just continues to slowly decrease.I begin my flights with the default C-172. At this point in the descent, my MCP altitude is set to where I want it to be for ILS interception. VNAV is still active. The airspeed inserted by the FMC to the descent waypoints after I load the FS flight plan is 240.The tutorial (pg 28) doesn't mention making any other FMC/MCP setting changes.What am I doing wrong?Thanks,

[sab12 6]

I found the solution - remove and reload the 757 v1.3 under Microsoft's KB331796 clean boot procedure.I have found that this is absolutely necessary for FSX installs but now I plan to use it for every FS9 one as well.