I bought both the PC version of Exbal and the pocket PC version of Exbal for my HP pocket PC. Although the desktop PC version works without fault I have been having problems with the pocket PC version. The problem I have been having is when I alternate between loads and calibers and work the program hard, it works well for a while then the pocket PC goes black screen and dies. This is the only program that seems to causes this problem. Has anyone had the same problem with this software? Do you think it is the soft ware or is my HP pocket PC on its last leggs? I have just bought a new China made battery for it and have been wondering if the battery voltage may be not quite right, although it is supose to 3.7 volts. Any ideas? At the moment it is too unreliable to go hunting with.