PHP warnings when saving on the "Blocks" page

[dsnopek]

Path: /admin/build/block

Here's the warnings:

warning: Illegal string offset 'region' in /app/modules/block/block.admin.inc on line 101.
warning: Illegal string offset 'status' in /app/modules/block/block.admin.inc on line 101.
warning: Illegal string offset 'status' in /app/modules/block/block.admin.inc on line 102.
warning: Illegal string offset 'region' in /app/modules/block/block.admin.inc on line 102.
warning: Illegal string offset 'region' in /app/modules/block/block.admin.inc on line 102.
warning: Illegal string offset 'status' in /app/modules/block/block.admin.inc on line 103.
warning: Illegal string offset 'weight' in /app/modules/block/block.admin.inc on line 103.
warning: Illegal string offset 'region' in /app/modules/block/block.admin.inc on line 103.
warning: Illegal string offset 'module' in /app/modules/block/block.admin.inc on line 103.
warning: Illegal string offset 'delta' in /app/modules/block/block.admin.inc on line 103.
warning: Illegal string offset 'theme' in /app/modules/block/block.admin.inc on line 103.