It seems that you are having some issues in order to run the SlingPlayer software version 126.96.36.1992 on your Windows Vista 32bit version computer.
First, you must take into account that we do not provide support for this specific software version. Instead, we encourage you to use the SlingPlayer web-based application.
With this in mind, I recommend you to test the same SlingPlayer software version on a different computer, as a workaround. This test will allow you to determine if the issue is related to your computer or not.
In all case, the following link will provide you with some information about the supported browsers and systems.