Illegal string offset Error - Any ideas?

[kh99]

I think that error happens when you have code like $somevar['ds'] and $somevar is a string. You can have something like $somevar[4] to get the 4th char in the string, but IIRC before 5.4 using a string would just default to 0, and now it generates a warning.

But I don't see any 'ds' being used in square brackets, so I don't see what's causing it.