[Plugin: NextGEN Gallery] NextGen Gallery Plugin conflict with Portfolio SlideShow Pro

I am using WooThemes Canvas with both NextGen Gallery & Portfolio SlideShow Pro plugins. There appears to be a conflict with NextGen which is preventing the carousel advance arrow to function properly on pages using Portfolio SlideShow Pro. I have been in contact with the developer. Please see example:
https://danielessig.com/wordpress/assorted-wooden-books/#1

Example of pages using NextGen:
https://danielessig.com/wordpress/sculptural-books/

Any help would be greatly appreciated! Thank you in advance for your time!
Jennifer

https://www.ads-software.com/extend/plugins/nextgen-gallery/