@Singunner, I am sure that your issue is not unique to this scenario. You are most probably getting the same message on all scenarios you try to access. There may also be a java setting that needs to be tweaked (java control panel).
@Singunner, go to your control panel and click on the java icon (it might say 'Java (32-bit)'). Then go to the miscellaneous tab and make sure the Exceptions Site list includes the following entry:
http://www.greenfoot.org/
fk u danpost, i cant open it. i tried everything you said. i can never trust you again. find someone else to be your babe. we are through dan. I'm done. Sorry. I guess this is goodbye. #VAPENATION
The Windows Control Panel doesn't easily get you to the Java Control Panel (a separate utility). If you can open the JCP (search for it) there will be a place to add the Greenfoot URL danpost mentions above. I know because I just went through the painful experience of getting his Applet to run. (There was a little browser message hiding behind the big browser window saying the <APPLET> tag was being ignored.) Also, Java forced me to upgrade the JRE before I could fix the applet problem.
So, danpostsBabe1, take another drag on your vape thingy and try again.
When I click on the Start button (from my desktop) and select 'Control Panel', I get an icon for 'Java (32-bit) which can be clicked to open the Java Control Panel.
A new version of this scenario was uploaded on 2016-10-29 18:31:16 UTC
Spelling correction + slight change in wording.
A new version of this scenario was uploaded on 2017-03-15 13:35:32 UTC
A new version of this scenario was uploaded on 2017-05-04 00:54:22 UTC
Correction is code given for a simple counting set object.
A new version of this scenario was uploaded on 2017-05-04 00:54:47 UTC
Correction in code given for a simple counting set object.
A new version of this scenario was uploaded on 2017-10-15 21:27:09 UTC
A new version of this scenario was uploaded on 2017-10-15 22:15:38 UTC
A new version of this scenario was uploaded on 2017-10-16 01:17:09 UTC
A new version of this scenario was uploaded on 2017-11-13 00:58:33 UTC
2016/3/14
2016/3/14
2016/3/14
2016/3/14
2016/3/14
2016/3/14
2016/4/17
2016/4/17
2016/4/18
2016/4/18
2016/4/19
2016/4/19
2016/4/19
2016/4/20
2016/4/20
2019/7/24
2020/3/14
2021/2/27
2021/2/27