Greetings,
After installing Juicebox-Pro 1.4.4.2 I have started getting this error in the Lightroom Web module:
Juicebox Error: Config XML file not found.
To reiterate, this is while using the Juicebox-Pro plugin in Lightroom itself - the error appears in Lightroom. The plugin works OK at first but then at some point while making Juicebox configuration changes (right-hand LR panel) the main LR pain (the big one in the middle where the preview is) turns a solid light gray color with only the above error message appearing. When it does this seems to be random in that the point at which this problem occurs does not seem to correlate with any particular setting or number of setting changes. Once this problem occurs, the only fix seems to be to exit LR's Web module and then re-enter it... at which point all the previously-made changes are gone and the Juicebox plugin appears to be reset to its default settings.
I have now tried to generate a Juicebox gallery five or six times using the 1.4.4.2 LR plugin and so far have not been able to.