If I could take a guess,
String tempJPEG = "saveimage;component/8alassa.jpg";
Has a bad character in it, the ";". BUT I don't think that is your issue...
If you look at your code "store.OpenFile", you should be using FileMode.Create (not Open) & FileAccess.Write (not Read). You're trying to SAVE/WRITE the captured image, not OPEN it.
Thanks,
Lance