AJW Client Downloads upload error and function split deprecation

I initially had this module running on a development server and have now moved to the host where the site will live. I’m now getting the following errors. I love the potential of this extension, so any suggestions for workaround would be much appreciated!

Since this is for a private company intranet, I’m using mysite instead of the actual site name.

I’m running:

Client Downloads extension 1.0.2 PHP 5.3.0

When I try to upload an asset, I get the following error: PHP Warning: opendir(http://mysite.com/uploads/library/): failed to open dir: not implemented in [path to mysite]\modules\ajw_client_downloads\mcp.ajw_client_downloads.php on line 1841.

When I try to access the settings panel, I get the following error: PHP Deprecated: Function split() is deprecated in [path to mysite admin]\modules\ajw_client_downloads\mcp.ajw_client_downloads.php on line 2291

Any guess what might be causing these issues and how I can address them?

Thanks for any help you can offer!