Invalid TIFF file

Question: 

When I open a TIFF file the program tells me "Invalid TIFF file". What is wrong?

Answer: 

The file is saved as Macintosh TIFF file. You should first read it in a graphics editor program under Windows and save it as non-compressed TIFF for PC.

Package(s): 
BIONUMERICS
Applicable for: 
Version 1.0 - 8.1