It might be possible to install multiple instances of the plugin on the same site using the same WP installation. Cannot presently say with 100% certainty as this has not been tested; however, were you to rename the plugin folder to another-wordpress-classifieds-plugin-2 and edit the file awpcp.php to change the table names to awpcp_ads2, awpcp_adsettings2, awpcp_categories2 and so on, you might be able to successfully run two instances of the plugin. Possible issues could arise with activation and deactivation, uninstalling and anything else that might cross over from one instance to another. You would in all likelihood have php errors due to re-declaring functions so you would have to change function names to avoid that problem.
Basically running multiple instances of the plugin off the same WP installation is not possible out of the box and the process involved in getting it to “possibly” work will not be quick and easy. It would be simpler to install a second copy of WordPress and run the plugin with the second WP installation.
If anyone has managed to get multiple instances of the plugin to run off the same WP installation please feel free to share for the benefit of those wanting to know if it can be done.
