Java 7! Help

[TapDancer]

I am running a 64-bit version of windows 8, and for some reason, Java 7 will not work on here. I am running Java 6 Update 41, and it works fine, but, whenever I try to load anything that uses Java 7 (like the VT chat room, or my brother when he tries to play RuneScape) it just has this error "Class not found". Does anyone know what the problem could be? This error has occurred with Java 7 updates 15 and 17.

[Sephtyan]

Well, if you're using Java 6 update 41, then it's natural that you'd have difficulty running applications that require Java 7. Simply update.

[TapDancer]

Well, if you're using Java 6 update 41, then it's natural that you'd have difficulty running applications that require Java 7. Simply update.

Sorry, my words can get mixed up. When I run things that need Java, Java 7 will not work. Java 6 runs perfectly, Java 7 does not. So, the VT chat room, works with Java 6, not 7. 7 does not work at all.

[HunterSteele]

Sorry, my words can get mixed up. When I run things that need Java, Java 7 will not work. Java 6 runs perfectly, Java 7 does not. So, the VT chat room, works with Java 6, not 7. 7 does not work at all.
Do you have Java 7 installed?

[TheMatrix]

Last time I checked, the VT chat room loaded just fine with Java 6(IcedTea6, to be specific). javap tells me it was actually compiled for Java SE 5, so 6 should work just fine.
Chances are that your Java cache is corrupt. This might fix it:

Go to the directory containing the Java executables(exe's). This is usually something like C:\Program Files\Java\jre6\bin\
Open up the program javacpl.exe
In the section "Temporary Internet Files", click "View"
Select anything that contains "chat" or "AddOn", and delete it.
Try it again.

HTH