Currently Being ModeratedAug 9, 2012 5:57 AM (in response to Jens Juul Nielsen)
OK, after reading all the information in this thread, taking the plunge for the $99 membership and downloading Xcode 4.2 for Snow Leopard, it fails to install on my intel Core Duo Macbook Pro running Snow Leopard 10.6.8. It starts to install but then it fails with the "An unknown installation error occured" message.
Currently Being ModeratedAug 9, 2012 8:52 PM (in response to Cactus Dan)
Hmm... I can't seem to find it in the list now. Was it there this morning (Aug 9)?
And, yes, I'm a paid member.
Currently Being ModeratedAug 12, 2012 9:11 PM (in response to Jens Juul Nielsen)
Apple changed the formate of there OS in Mac OS X Lion. That is one OS above yours. They also changed the compare of Xcode to be compatible with Lion.
Currently Being ModeratedAug 12, 2012 9:12 PM (in response to Florin101)
Sorry meant to say formate instead of compare
Currently Being ModeratedAug 14, 2012 1:23 AM (in response to Cactus Dan)
I'm running 4.2 (build 4C199 for reference) on 10.6.8 - so there's no version incompatibility, if that helps.
My set up is Mac Mini, but I doubt the hardware is relevant.
Maybe you've solved the problem by now - otherwise I guess it's a matter of slogging through trying to isolate any oddities in your setup.
I don't know if there are lists anywhere of possible software interactions/incompatibilities between the Mac tools and other software, but that's propbably where I'd start. But you know that!
If it's any consolation, you are not alone in finding Apple's complete backwards compatibility crapness a pain. Android tools put Apple's to shame. So there's a thought. Android!
Currently Being ModeratedAug 22, 2012 10:40 AM (in response to dborges23)
Thank you so much for this link!!! worked like a charm!!
Currently Being ModeratedSep 28, 2012 6:24 PM (in response to paolinide)
Hi, i buyed xcode 4 from app store, then cant find the 4.2 update for snow leopard even as registered developer, email veryfied and so; the link to the download (https://developer.apple.com/downloads/download.action?path=Developer_Tools/xcode _4.2_for_snow_leopard/xcode_4.2_for_snow_leopard.dmg)
return the same error message (page denied blablabla).
Can anyone help me, please?
Paolinide posted the actual download link, if you are a registered developer just click above. For some reason it seems that Apple has removed the link from their website, which is very frustrating as it took me a couple days to find this.
Currently Being ModeratedOct 22, 2012 6:05 PM (in response to YangaMGMT)
For those getting the error, make sure 4.1 is installed then install the 4.2 update.
Currently Being ModeratedOct 22, 2012 11:11 PM (in response to timbos)
Also, needed to update itunes to 10.7 and updated the installer and XCode 4 is now installing without the error.
Currently Being ModeratedOct 23, 2012 5:11 AM (in response to timbos)
Do you happen to know if updating xCode without updating OSX gives you the classes for producing JSON data containers from CoreData, or do you have to update to OSX Lion/Mountain Lion as the 'availability' on apple JSON class pages says?
Currently Being ModeratedOct 24, 2012 9:03 AM (in response to mark133)
It's Xcode, not xCode.
The class you're looking for is NSJSONSerialization; it's actually part of the Foundation Kit, and has nothing to do with Core Data. It was released with 10.7 and is available on the SDK for iOS 5. It is not available to developers working on earlier dev tool releases.
You do have alternatives like JSONKit and SBJSON, however. In my experience, either work great. I much prefer the latter's API, but the former's performance is amazing.
Currently Being ModeratedNov 19, 2012 1:01 AM (in response to Jens Juul Nielsen)
Is it legal to download this from elsewhere, such as a torrent?