My Leopard is an upgrade from Tiger. I created a new Droplet and discovered that the error message in the title of this post was produced each time the Droplet was called. There was no failure at the GUI level. Weird, since I have an Intel based Mac not a PowerPC (ppc suffix in message). Also, I found that dyldshared_cacheppc did not exist in the dyld directory. The following Terminal command fixed the problem: updatedyld_sharedcache -force I hope this post saves time for others.
Mac Pro 2x3GHz Dual, Mac OS X (10.5.1), BootCamp WinXP ,LinkSys WRT54G, iPhone, AppleTV
Not only did you save me time, you saved my sanity. I've been on the brink of being institutionalized for weeks having tried a million other solutions to no avail. This worked magically. Can't thank you enough!!!!