2.0RC2 package has been updated, please download it again.
Your original Apache rewrite rule should works fine with LiteSpeed now, please change rules back, sorry about the trouble.
Couple suggestions to improve the rewrite efficience:
If possible, add rewrite rules to virtual host configuration instead of being inside a .htaccess file.
To append "[L]" flag to the end of each rewrite rule to save some time on unnecessary rule matching.
To reorder your rules based on request volume.
There is no limit on URL rewrite, please let me it works or not.