justmiff

Hi there, I'm trying to install WHMCS on Plesk 12, it's running PHP 5.5 with IonCube v4.7.3. I've put the latest version of WHMCS in the htdocs and set the relevant access yet navigating to the install URL just gives me an internal server error. I've checked the logs and there's literally nothing but this: 2016-02-27 15:32:50 W3SVC14 ip-AC1F1B9F 172.31.27.159 GET /install/ - 80 - 82.6.*.* HTTP/1.1 Mozilla/5.0+(Macintosh;+Intel+Mac+OS+X+10_11_1)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/48.0.2564.116+Safari/537.36 SPUsageId=8b85252a-cd91-44b7-ab9d-73eab194f0cd;+WSS_FullScreenMode=false;+_gat=1;+_ga=GA1.3.1438554410.1456582519 - billing.*** 500 0 0 1691 560 46 I'm not good with PHP stuff and literally just want to get this up and running to check it out but can't for the life of me work out why it's not working, this is the only application that I have found not to work on my plesk installation. Many thanks.