First: Please post support requests for Portfolio Slideshow Pro to the Raygun forum: http://madebyraygun.com/support
We don't always check the WP forum here but we are very active on our own forum, which is intended to support our Pro products.
Second: Please delete the plugin and try re-installing a fresh copy. The "portfolio-slideshow-pro.tmp" in your plugin path suggests that the plugin didn't install completely. Also, I think that this error has been addressed in latest versions of the plugin, so make sure you download 1.7.5 from our website.
Again, if you need to follow up, please make sure you've got 1.75 installed and you post to the Raygun forum.
Cheers,
Dalton