Dear ENVI's users I've updated my 4.5 version to the 4.6 and today to the 4.6.1 and I've found two main problems: 1- MrSID it is not supported, I receive an error message each time that I try to open a MrSID image. The same image can be opened without problems using the previous version 4.5, 4.4.... Someone has observed the same problem?   2- The Help from the Help menu in the main toolbar don't want to be opened (no problem instead with the 4.5 version). I'm using Microsoft XP SP3 OS.   Thank you, and if someone has suggestions or noticed the same problem please reply asap. Enrico