I have fix numerous issues with Arabic especially XDerium. Thank you For Brother Abdul Rahman for reporting.
You can now re-download the zip.
1. Arabic and non Arabic subforum folder icons spacing bug.
2. Arabic breadcrumb home being cut off
3. XDerium forumhome icons overlaps in subforum list.
4. XDerium postbit bottom slant triangle design off position in Arabic.
Thank you for your support,