The MacOSX installer disk image appears to be damaged.
See attached error when trying to run jedit.
System is updated to Oracle jvm.
If you use Mountain Lion, did you activate third party applications in security settings or right click on it to open it ?
FYI, I had no problems installing and running 5.0.0 on OSX Lion (10.7.5) from the disk image. Could be a security issue as suggested, or a corrupted download. You might also consider downloading from a specific mirror.
Could be both, but I know that if the security settings on Mountain Lion was not changed it prevent installing non signed applications and says that the dmg is damaged.
But if the security settings are modified to allow that, it should work, I tried the dmg yesterday.
Thanks for the comments!
Had forgotten about the security settings, seems like the java app bundle obscures the real error a bit.
Yes I'm not sure about how we can fix that I'm not an expert at dmg packaging.
But at least we should add a hint because the message is not very clear, and you are not the first user that has the problem (and you are not the last)
To make Gatekeeper happy with default settings of a Mac you would have to use the Oracle application launcher, bundle a JRE and sign your AppBundle with a key you get from Apple if you join the developer program for 100 USD per year. The last of these points is a killer criterion here in my opinion. But I greatly improved the situation for 5.2pre1 by customizing the root folder of the DMG with a background image with message of how to come over the restriction which is just to open jEdit once by "Ctrl+Click -> Open". After this, OS X forgets that the AppBundle was downloaded and runs fine. This is an easy and more secure alternative to lower the Gatekeeper security settings.