I'm using joomla 1.6 with mini ad spot 1.6...I have three errors in front end which says:
1. "Notice: Undefined variable: tags in C:wampwwwpsdirmodulesmod_miniadspotmod_miniadspot.php on line 23"

2. "Notice: Undefined variable: tags in C:wampwwwpsdirmodulesmod_miniadspotmod_miniadspot.php on line 24"

3. "Notice: Undefined variable: jqueryloader in C:wampwwwpsdirmodulesmod_miniadspottmpldefault.php on line 43"

I tried to fix this by removing the comments in mod_miniadspot.php in line 21 and 23:
"21. //$tags = addslashes(str_replace("n","", $mainframe->getCfg( 'MetaKeys' )));
22. //$tags = trim($tags);"
but then I got a new error:

1. "Notice: Undefined variable: $mainframe in C:wampwwwpsdirmodulesmod_miniadspotmod_miniadspot.php on line 21"

How to fix this?