On Windows systems chm manuals are not displayed
mvBlueFOX, mvBlueFOX3, mvBlueCOUGAR, mvTITAN, mvGAMMA, mvDELTA, mvSIGMA, mvVirtualDevice, mvHYPERION, mvBlueLYNX, mvBlueLYNX-M7, mvIMPACT
Microsoft has released a security update for Windows in 2006 and so CHM files which were downloaded via web browser have to be unblocked (only on systems with NTFS file system). Please download the manual and right click on the file and select "Properties". Click on the button "Unblock". Afterwards you can use the manual as normal.
You will have the same behavior, if you save the file on a network drive after downloading it and trying to open it via internal network. Please save the chm locally and unblock it.