Can cocoa applications run on lion?

Can cocoa applications run on lion?

In my first reply I used the word 'language' where I should have used 'interface' since Cocoa is an API. Sorry.
You are correct with your history. It is the dropping of Rosetta which is causing Lion to no longer support PowerPC code. This is one of the major compatibilty problems of Lion. There are also other changes in Lion which will cause applications that would seem to be compatable to not run. In those case you need newere verion of the applications to run with Lion.
Allan

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    Having a backup and restore strategy is one of the most important things you can do to maintain your computer. Get an external Firewire drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
      1. Carbon Copy Cloner.
      2. Deja Vu
      3. SuperDuper!
      4. Synk Pro
      5. Tri-Backup
    Visit The XLab FAQs and read the FAQs on maintenance and backup and restore.
    Always have a current backup before performing any system updates or upgrades.
    Be sure you have an adequate amount of RAM installed for the number of applications you run concurrently. Be sure you leave a minimum of 10% of the hard drive's capacity or 20 GBs, whichever is greater, as free space. Avoid installing utilities that rely on Haxies, SIMBL, or that alter the OS appearance, add features you will rarely if ever need, etc. The more extras you install the greater the probability of having problems. If you install software be sure you know how to uninstall it. Avoid installing multiple new software at the same time. Install one at a time and use it for a while to be sure it's compatible.
    Additional suggestions will be found in:    
    1. Mac OS X speed FAQ
    2. Speeding up Macs
    3. Macintosh OS X Routine Maintenance
    4. Essential Mac Maintenance: Get set up
    5. Essential Mac Maintenance: Rev up your routines
    6. Five Mac maintenance myths
    7. How to Speed up Macs
    8. Myths of required versus not required maintenance for Mac OS X
    Referenced software can be found at CNet Downloads or MacUpdate.

  • I have paid and downloaded LION and want to update my IMAC, can i just run install and it keep photos settings etc from Snow Leopard or is a full reinstall with wiped hard drive, anyone have any experience of this and do i need to run a backup beforehand?

    I have paid and downloaded LION and want to update my IMAC, can i just run install and it keep photos settings etc from Snow Leopard or is a full reinstall with wiped hard drive, anyone have any experience of this and do i need to run a backup beforehand?

    Always backup your important data before upgrading to a new Mac OS X.
    Lion doesn't erase the drive but better to be safe than sorry.
    And run Disk Utility  (Applications/Utilities). Verify and if necessary repair the startup disk before upgrading.
    Using Disk Utility to verify or repair disks
    Before upgrading read here >  Lion upgrade questions and answers:  Apple Support Communities
    And here >  What applications are not compatible with Mac OS X 10.7 "Lion"? What upgrade or substitute options are available for common incompatible applications? @ EveryMac.com

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