Tag links are invalid

index.php?blog=12&tag=parasites

Instead of

index.php?blog=12&tag=parasites

Have you edited files in /inc directory?

The links are invalid? Hmmm.... the tags were added by the blogger when the post was written in 2.4.2. Is it possible that with the upgrade, the code got changed?

No, I haven't edited any files in /inc directory. Where do I begin, if I need to?

Actually you shouldn't edit files at all :)

Try to change all URL schemes to "extra path" on Blog settings > URLs

Hot Dog! Sam2kb, you are THE MAN! Wahoo!!! - they both work. :)

Most interestingly, the Home Page works fine without changes to settings; the 'Blog Base URL' has always been on 'extra path' and perhaps this is the difference and why the cloud had always worked on that blog.

Anyway, I'll change all the bloggers URLs in case they want to use the tag clouds.

Many thanks for your suggestion. :)

The good thing is that you found a bug.
I've just fixed it in v5 ;)

Oh cool! Glad that I could be of help. :)
I'm surprised that no one has come across this problem before, or maybe they thought it didn't work in their blog and decided not to use it. Hard to know for sure....

Most people use "extra path" URLs since it's a default setting

Ah, I see. Years ago EdB had me change the URLs because the permalinks weren't working correctly in 2x and/or there was some weird bolding bug where the entire blog was in bold.

Anyway, glad that the cloud problem is fixed.

Again many thanks for your help. :)

No problem