Rescue DVD problem with ext4

I use Acronis True Image Home 2011 (ATIH 2011). I use the Rescue DVD to back up my Linux ext4 partition. So, I am not talking about using ATIH 2011 while running Windows. Instead, I prefer to use the Rescue DVD to back up my ext4 partition. The first thing that I notice is that the output tib file is 50% BIGGER than the used space of the ext4 partition. This should not be the case, because I use Compression=High. Next, on the "Backup Information" window, shown by the Rescue DVD, the output tib file is flagged with an ERROR ICON. However, I have made sure that the ext4 partition has no filesystem error, by using the Linux fsck utility. Also, the Acronis Log shows no error in the process of producing the output tib file. The Acronis log is attached herewith.
1) Why is the output file 50% BIGGER, when I use Compression=High?
2) Why is the output file flagged with an ERROR ICON, when both fsck and Acronis Log show no error?
Any information or clarification that you may give will be much appreciated.