If you are using the current version of the script you should be getting data from ALL the trace files. The T.path column will only return the path of the current file which is why there is a CASE statement setting up the first parameter in the call to fn_trace_gettable. T.path comes form the sys.traces table so it only has the current file name.
Jack Corbett
Consultant - Straight Path Solutions
Check out these links on how to get faster and more accurate answers:
Forum Etiquette: How to post data/code on a forum to get the best help
Need an Answer? Actually, No ... You Need a Question