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Installed Messages Beta - now my Mac wont boot!, Installed Messages Beta - now my Mac wont boot!

Update:11-30Source: network consolidation
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Hi,
I just installed the Messages beta tonight, restarted as requested and then found the boot took ages... many minutes.
In the end i restarted it, only to find the same result.
I then boot in verbose mode and see that the mac stops very early with the following message
"dyld: Library not loaded: /usr/lib/libz.1.dylib"
"  Referneced from: /System/Library/Frameworks/Security.framework/Versions/A/Security"
"  Reason: malformed mach-o image: load command #1 length (2336878517) would exceed sizeofcmds (272125132) in /usr/lib/libz.1.2.5.dylib
"The System bootstrapper has crashed: Trace/BPT trap: 5"
I've copied this from a photo i took so some of the details may be wrong.
I've only just recently upgraded to a SATA III SSD hdd, so still have my week old hdd boot around which i'm logged into now. I've tried comparing the mach_kernel, /usr/lib/libz.1.dylib (links to the 1.2.5 version), and  /System/Library/Frameworks/Security.framework/Versions/A/Security files reported and all 3 of them are exactly the same according to md5 on the failing to boot disk compared to the succeeding to boot disk.
Has anyone got any ideas how i can fix this? I never managed to make a time machine backup of the disk as was sadly. I'm a little worried it could be due to SSD SATA III issues.. there was a long pause to my system whilst it was trying to install messages, which i've noticed from time to time since installing the SSD.
Frustrated!! Any help, appreciated.

The Best Answer

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Hi there,
Sadly, I'm pretty sure replacing a hard drive on a MacBook Pro voids the warrentee, so you may have to pay out if this needs a repair. Let this also be a lesson about taking backups - I really feel for you here.
While I can't pinpoint what could be causing this, the best way forward is probably a clean install. This could also clear up a few issues with your SSD. You can do this by booting your mac in recovery mode. Hold Cmd-R when booting. Here you will have a few options to troubleshoot your machine also.
Sorry I can't help further here, I wish I could,
Nathan