OCX files can be found at www.kssco.com then clicking on "Updates." Scroll down to "Utilities" and download the correlating OCX file that is missing.

save and unzip the file.

For 32 bit OS:

Copy the file into c:\windows\system32\

register from the command prompt using:

regsvr32 C:\windows\system32\comctl32.ocx

For 64 bit OS:

Copy the file into c:\windows\syswow64\

register from an administrator command prompt:

regsvr32 c:\windows\syswow64\comctl32.ocx