Reef Angel Forum

I keep getting "Uncaught exception in main method: java.lang.UnsupportedClassVersionError: Bad version number in .class file" any help would be greatly appreciated. Followed the instructions and deleted everything and tried it again with the same problem. Thanks in advance.

Did you download the RA installer from the website?
When do you get this error message?

I followed the directions straight out of the manual. Downloaded the RA installer. dragged the wifi and anduino to applications. installed ftdiusbserialdriver and reset. Powered up the controller connected the usb my computer and to the RA controller all the way to the right with the two pins exposed to the left like shown in the manual. Im at a loss let me know if anything comes to mind. Thanks in advance, Brian

When do you get that error message?

I get the error message when I try to open anduino. The error message pops up and then just gives me the option to quit. Is there any way to check to make sure the USB software is working? maybe it is not working due to not seeing the RA. Thanks in advance, Brian

What version of OSX are you using?

10.5.8

That's PPC, right? Prior to Lion?
I haven't tested it on that version to be honest.
Can you download the original release from Arduino?
http://arduino.cc/en/Main/Software
If it works, we will work around the differences.

not sure what PPC means and it is prior to lion. I tried to download the most current arduino with no luck. same error "Uncaught exception in main method: java.lang.UnsupportedClassVersionError: Bad version number in .class file"

PPC= PowerPC processor.
Mac used to have their own processor before they shifted to using Intel processor.
I think you need at least Lion, which I think is 10.6

processor is 2.4 GHz intel Core 2 Duo

so if I download lion I should be good?

Check this and see if it helps:
http://www.arduino.cc/cgi-bin/yabb2/YaB ... 1280503544

any idea on how to get to Java preferences?

sevenhillsreefer wrote:any idea on how to get to Java preferences?

It is located under /Applications/Utilities

I use the installer successfully on my Mac with Lion (10.7)

I ordered snow leopard (10.6) Hopefully it will work after the upgrade. will keep you guys posted. I tried turning the Java on with same error. I am assuming the 10.6 will solve the problems hopefully.

sevenhillsreefer wrote:I ordered snow leopard (10.6) Hopefully it will work after the upgrade. will keep you guys posted. I tried turning the Java on with same error. I am assuming the 10.6 will solve the problems hopefully.

I can confirm that snow leopard works. I have a mac mini running 10.6.8 and I just went through the installation exactly like you said it it worked just fine for me. Downloaded the installer, installed arduino and wifi utility, installed the ftdi drivers, restarted computer, launched arduino and it works. I even tried having it plugged into my controller while launching arduino and it still works.

binder wrote:

sevenhillsreefer wrote:I ordered snow leopard (10.6) Hopefully it will work after the upgrade. will keep you guys posted. I tried turning the Java on with same error. I am assuming the 10.6 will solve the problems hopefully.

I can confirm that snow leopard works. I have a mac mini running 10.6.8 and I just went through the installation exactly like you said it it worked just fine for me. Downloaded the installer, installed arduino and wifi utility, installed the ftdi drivers, restarted computer, launched arduino and it works. I even tried having it plugged into my controller while launching arduino and it still works.

I have tested it on Lion, haven't installed it on Mountain Lion yet.

System is working with computer now. Thanks for all the help everyone once I get some time I will start to program so i'm sure you will be hearing more questions.
Thanks again,
Brian

sevenhillsreefer wrote:System is working with computer now. Thanks for all the help everyone once I get some time I will start to program so i'm sure you will be hearing more questions.
Thanks again,
Brian

Glad it's working now for you. Feel free to ask all the questions you want. Somebody will be able to answer it for you.