Just to add - I can see in the help content that I should be able to right click on the snippet icon and see the delete option - unfortunately we have no icons, only text labels with no other menu options. Would be great if there was a link structure someone knew of that I could use to delete the snippet at least to eliminate this as a possible cause.

Hi,

I haven't seen this behaviour before so I guess its a bug.

I assume you have the latest version of nw2007 installed and the DB-Schema is also up to date right?

Are you the only person that faces the problems with the snippet icons?

Do you have a custom master page applied that might affect the workflow designer's behaviour?

I don't know if this would cause the issue or not, but maybe you have a list item or a library item that is attached to this workflow that is still in process thus still using the variable.

Just to followup - yes our custom master page hides many of the options and affects all users. I abandoned trying to achieve this in SP2007 and am now working through tidying up our Nintex workflows that have been migrated to SP2013 (much, much easier) - thanks for assisting tho!