hi, sometimes the first of a series of split files is downloaded as an avi. The d/l'ed first file shows xxxxx.001.avi instead of just xxxxx.001. The second file and so on are usually ok and show xxxxx.002, etc. Thus, when HJsplit looks, it sees no file ending in .001 If this is your problem, simply go in and rename the the first file by deleting the .avi at the end to change its ending to .001. Do not add another .001, backspace to the imbedded .001 The computer will probably warn you that changing this may be a problem. Say change it. The file icon will change to the .001 format and HJsplit will be able to find it.
Hope this helps.