The filter doesn't seem to work as well as uigetfile, explains the 3 star. Here is the command I wrote, [a,b]=uigetfiles('*ab.txt','pick multiple files'). All the txt files were displayed. Is there anything I can do to get that filter working?
The 45 files limitation bug was corrected in ML release 2007b. See http://www.mathworks.com/support/bugreports/details.html?rp=258791.
You can use uigetfile with option 'MultiSelect', 'on' to select multiple files.