For those only viewing one thread, I have a user file fix at
http://forums.wolflair.com/showthread.php?t=7771&page=2. It seems to work correctly for me. Two ranks of each feat on Blast 7 gives you:
Powers:
Blast 7 (DC 22; Improved Range 2 (350 ft. incr), Progression, Increase Range 2 (max range x5[3500 feet]))
The maximum range is built on 10 increments of the default range. This means that if you take Improved Range, you normally reduce the number of increments you can shoot (as seen in Ultimate Power page 13). However, if both feats increase in lockstop, you continue to have 10 increments of range.
Now let's just hope that 3E fixed the "ranged area attacks can hit anywhere within 10 range increments without penalty" rule. :-P