Openlab EZChrom files doesnt allow the application of electronic signature to the whole seequence....

Hi I am having problems applying an Electronic Signature to .dat files after processing.

When a result set opens after processing it will always open one of the .dat files. If I then attempt to apply a signature to all the files in the set it will allow me to do that with the exception of the .dat file that is highlighted in yellow. It is also the data file that it selected along with method at the top of the screen. So I have to apply the signature. then after it fails for the one .dat file that is open I have to press the arrow down to go to next .dat file and then I can sign that file....

Does anyone know how to close all data files whilst keeping the result set open so that I can apply a signature to all files at once?

If there are no answers by tomorrow I will post some screenshots. (I am at home right now...)