Thanks for the info ToasTeR1094. It was confusing before.
java computer doesn't work

Here is what I get when I try the java verify.
http://i.imgur.com/PyX1Xgm.png
Edit 1 - Also just tried it in firefox, it does work. So I guess its a problem with chrome? Really don't want to have to switch to firefox though whenever I want to use the vs. computer options.
Edit 2 - Well nvm its also working in chrome now. Don't know why it wasn't working previously.
The program went to the Internet site and verified itself. Apparently brmchess's advice was right on! Good advice brmchess. You forced him to verify his java application and then everything worked.
Don
It works!
I'm running XP with service pack 3 using Google Chrome.
Go to: Control panel -> Java -> Security -> Edit site list -> Add http://cssjs.chesscomfiles.com/ OK OK
Accept the risk when asked.
Voila!!! Thanks to brmchess.
ParisPete
Thanks for the acknowledgement ParisPete. I'm glad it works for you.
I haven't stated my actual opinion for a while. Chess.com should sign their java applet and none of this discussion would be necessary. It is not a difficult thing to do http://stackoverflow.com/questions/19542225/sign-java-applet-for-work-without-java-warnings. There is a cost but it isn't high for a site like chess.com (I found prices for $200 to $500 per year via a quick web search).
Earlier in this thread someone said that all resources are being applied to a site version 3 which won't use java. I understand that as a long term strategy but I think they should also sign the applet now.
That said, it does work for me now and I'm not thinking about cancelling my membership.
... I normally use Chrome, but if I have to use java for some reason, I'll open Safari since that 64-bit browser will accommodate Java 7.
Not mush use if you use a Chrome OS based system. Google think Java is insecure, and altogether out of date, and just don't allow it to run. If it's the same for android, and other mainstream systems , that it can't be long 'til Java dies. Having been forced to program in Java, I'll be dancing on its grave...
Someone mentioned there was a fix. Maybe he was thinking of the Chrome browser, I was talking about Chrome OS. But if there is a way to get Java running on Chrome OS please point me to it... given that Java's support groups are littered with comments abnout how Java doesn't work on Chrome OS I doubt there is such a thing. But I'm happy to be corrected...

I'll tell you what I do and maybe it will help some of you. Neither IE8 nor Google Chrome work for me on this site, but keep in mind that management has just upgraded to version 3, so I can not say that they still do not work even though I'd bet they still do not.
However, my time is valuable, like your time is, and we all want to run certain programs on various sites without having to be a computer expert to make it happen!
So what I do is simply go to "toolbars" and turn on the "Quick launch toolbar". I set my browser to use Firefox for my 32 bit system as the default browser, but you need to use Safariif if your are running a 64 bit system. Now then... I put the other browsers in the "Quick launch Toolbar" so that I can select any of them to use where ever I want to go. It is actually easy because I configure each browser for each site.
It is not that hard to do... just find one that works here and configure it using all the information that has been written. If you use this site a lot, make that browser your DEFAULT browser, but put in the 'Quick Launch Toolbar' the other browsers which work better than what you are using here. For example, I don't think you can beat IE8 when it comes to speed and you're playing a game on the Internet. But IE8 will not display properly here. Google Chrome does not like Java, and is also a spyware program to track your every movement AND even your email! They justify all of this by saying that they only send you ads that they know (by tracking you) that you are interested in.
You can prove this for yourself - don't just take my word about it. Write an email to a friend that you need to get a snow blower and Wha-LA! Within 3 days you will be getting ads for a snow blower! So I don't use Google Chrome for anything.
BUT, as I said, create a 'Quick Launch Toolbar'and put the browsers of your choice in them. When you click on the browser you have to open up your "Favorites" Menu and then go to whatever site you like. If you use Google Chrome to do this and you go to an 'x-rated site' you will be getting a lot of 'x-rated' ads because they are watching you.
Best regards,
Don
Google Chrome now has an "Incognito" option if you don't want your boss to see that you are spending all your time playing chess... at least it stops it being recorded in "history" and showing up on the Google search page. I'm not sure if you will get ads related to incognito browsing, but I doubt it otherwise it's hardly incognito...
I had added http://cssjs.chesscomfiles.com to Java security, but it didn't work until yesterday.
Now, it is working. I don't know why, but I've just played vs. Machine. Good!
(Windows 8-64bit, updated Chrome.)

It seems that they solved the issue. I did not change anything and it is working for me.
Probably they fixed it with the other bugs. (I got a message from chess.com about some bug fixes)

It seems that they solved the issue. I did not change anything and it is working for me.
Probably they fixed it with the other bugs. (I got a message from chess.com about some bug fixes)
Make sure you are not using java ver 4, because as many people have posted, java 4 inserts a virus into your system. You must remove that version and install java 5 or version 5.1. Then you should be clean. I agree with previous posters that you should also d/l the free versions of ant-malware and Superantispyware.
ALWAYS go to the main site to d/l these programs.
Don

I don't have the time to verify what you have said... but if it is true then you are an angel!
Thank you for helping the other members.
Don

Twelve pages of frustration and arcane workarounds = chess.com programming sophistication. Chess.com is happy to take my money and then not answer my questions as to why Play vs. the Computer does not work. Follow the directions here for a workaround to make this feature work:
https://support.google.com/chrome/answer/6213033

Doesn't work for me and no response other than get the full package umpteen times in my messages.....i hate that, just like facebook, they want to make all that money but not help anyone out....

SOLVED
I had the same problem today (started play on chess.com yesterday night), but solved it today.
Find the "Configure java" program. (The program is easy to find in windows 7 - press the windows/start button, - and write "java" in the search field). "Configure java" should be one of the options that appear.
Run (click) "configure java"
select "security"
select "edit site list"
select "add"
and type "http://cssjs.chesscomfiles.com
It worked at my computer :-)
I am using firefox and windows7 64bit
Here is what I get when I try the java verify.
http://i.imgur.com/PyX1Xgm.png
Edit 1 - Also just tried it in firefox, it does work. So I guess its a problem with chrome? Really don't want to have to switch to firefox though whenever I want to use the vs. computer options.
Edit 2 - Well nvm its also working in chrome now. Don't know why it wasn't working previously.