Unknown error report

Under channels tab the following error shows:

user warning: Unknown column 'inventory' in 'field list' query: SELECT chid, name, description, weight, inventory FROM ad_channel WHERE conid = 0 ORDER BY weight ASC in /home/content/a/n/g/angelescondo/html/main/sites/all/modules/ad/channel/ad_channel.module on line 857.

Front page content shows:

user warning: Table 'ang0920302083922.ad_channel_remnant' doesn't exist query: SELECT remnant FROM ad_channel_remnant WHERE aid = 1 in /home/content/a/n/g/angelescondo/html/main/sites/all/modules/ad/channel/ad_channel.module on line 666.

http://www.angelescitycentral.com/main/sites/all/modules/ad/serve.php?m=...
http://www.angelescitycentral.com/main/sites/all/modules/ad/serve.php?m=...
http://www.angelescitycentral.com/main/sites/all/modules/ad/serve.php?m=...