I'm having a lot of out of memory issues when reading comics. When I check I still have plenty of memory and in fact, other readers like jjcomic viewer can launch and work fully.
Is this problem only occurring when viewing. cbr files? If so, have a look at the support thread - there's plenty of posts about this. Bottom line is that you should have no problems if you use. cbz files instead. If you're having the problem on non-rar files let the forum know.
Still I'm curious. If another Android comic viewer is able to open those comics, then we should be able to do it too. Can you give us more info, kwoodall?