error in rendition:waitForRender() on Mac

Hi,

I am writing a lightroom plugin which publishes all my photos to a remote location. My plugin works very well with windows but when I try to do the same on Mac it doesnt work.

After a little debugging I found out that local success, pathOrMessage = rendition:waitForRender() is the line where i get error. On Windows in pathOrMessage I get the location of the image which I then use to make a post request.But the same thing on Mac throws error saying "AgNegative:renderToFile: <AgErrorID>dng_error_write_file</AgErrorID>".

Can anyone please help me solve this. I would really appreciate your help. Thanks in advance