[Plugin: Portfolio Slideshow] Only Four Images

This seems to come up sometimes when using a particular Google Analytics plugin (I can’t remember which one exactly). It modifies the loop and prevents some images from loading. Is that possibly the cause of the problem?

Otherwise you could try our general troubleshooting suggestions and see if it helps: https://madebyraygun.com/support/faq/how-can-i-identify-the-cause-of-conflicts-with-the-plugin

Dalton