The following new section must be added to the end of the existing nrt.ini file (located in c:\windows or c:\winnt):
Note The values PDF or ACROBAT, TIF or TIFF must match the values that Worksite 8.X is using in it windows applications list. The values are customisable in Worksite, so they may have different values to the samples shown above.
It will mostly likely be
or could also be
Please contact us if none of the above options work.