UltraARC for Inno Setup (Conversion Tool)

[SAM2712]

Razor.!
firstly Problem : When I use (UA_3030_30062015)..When I start procedure then nothing happens after waiting..but when I click on close then suddenly starts the process of conversion and complete successfuly AND UA close itself because I click on close button to start the process..! It does'nt happen with (UA_2400_30062015)

So , my config. in Both UA are same like : RUN AS ADMIN, Compat. with Win7, compression with freearc and Threshold 100 % (No matter I have enough space)

So , where is the problem in (UA_3030_30062015) or This problem in my pc but i don't think its in my pc as (UA_2400_30062015) is run well.

Second : Why there is difference in compression ratio in both UA version..I think (UA_2400_30062015) do slightly much compress..!

Please suggest..