Simba help - issue with opening up script

Opened up a thread on srl forums but thought I'd post here to see if anyone can help too

I'm having an issue with opening a script after I have simba open. When I click play it comes up with "open ********* with" and a screen of programs I can use

Things I've tried
redownloading java
redownloading simba (in 32bit)
choosing one of the programs fucks up my entire comp by switching all programs to run as that

Thanks for any help