[support] Relation module

I tried using Relation module to associate Taxonomy terms and the module failed. It relates some taxonomy terms but not others, I do not know what the differences may be that cause this discrepancy.

Now I get error message: Undefined index: relation in field_info_instances() (line 687 of /home/mydir/public_html/site/modules/field/field.info.inc I do not understand this error or how to fix it. The latest video tuts are for old versions and do not relate to the latest module I would like to eliminate it from my system but it's proving very difficult to dispose of as some switches cannot be turned off once initiated.

Help appreciated thanks Very Frustrated Roger