getNeighborProducts error

[VlaKur]

I open demo site, view category, change same sort order (why you don't use price sorting, it dosn't work, sime times change sorting in version 2.24c and you'll see, sort dosn't work good), but now i find next error
"getNeighborProducts error" on product page, error, like this and at my site too.
view image...


[attachment cleanup by admin]

[jenkinhill]

Is already fixed in 2.0.26

[VlaKur]

demo page donn't use last version virtuemart 2.0.26?   
which version of the demo page virueMart?
thank