- your application/blocks/ folder has read and write permissions (i.e. 0775 rights);
- your packages/ folder has read and write permissions (i.e. 0775 rights);
Be aware: if you install any blocks into your package, rewrite any ABSOLUTE paths within view files yourself. If you include a stylesheet/javascript file with the full path to the block, or anything else, make sure you manually change them after creating your package.