com.sap.mw.jco.JCO$AbapException: (126) DISPLAY_API_ERROR

We are operating business pakage for assets 50.3 on portal netwever 6.0 was 6.40 stack 9 .

when we try to open a TIF document we get the error

message

com.sap.mw.jco.JCO$AbapException: (126) DISPLAY_API_ERROR: DISPLAY_API_ERROR

when i open the file from sap it's working OK.

The definition of the Tif viewer is the file exec

on the novell server:

P:\APPS\FLPLUS\EXE\FL32.EXE

What is wrong with my definition ?