Operating System Errors

An operating system error is an error that occurs when AppleScript or an application requests services from the Mac OS. They are rare, and more important, there's usually nothing you can do about them in a script. A few, such as "File <name> wasn't found" and "Application isn't running" , make sense for scripts to handle.

Error number	Error message
0	No error.
-34	Disk <name> is full.
-35	Disk <name> wasn't found.
-37	Bad name for file.
-38	File <name> wasn't open.
-39	End of file error.
-42	Too many files open.
-43	File <name> wasn't found.
-44	Disk <name> is write protected.
-45	File <name> is locked.
-46	Disk <name> is locked.
-47	File <name> is busy.
-48	Duplicate file name.
-49	File <name> is already open.
-50	Parameter error.
-51	File reference number error.
-61	File not open with write permission.
-108	Out of memory.
-120	Folder <name> wasn't found.
-124	Disk <name> is disconnected.
-128	User canceled.
-192	A resource wasn't found.
-600	Application isn't running.
-601	Not enough room to launch application with special requirements.
-602	Application is not 32-bit clean.
-605	More memory is needed than is specified in the size resource.
-606	Application is background-only.
-607	Buffer is too small.
-608	No outstanding high-level event.
-609	Connection is invalid.
-904	Not enough system memory to connect to remote application.
-905	Remote access is not allowed.
-906	<name> isn't running or program linking isn't enabled.
-915	Can't find remote machine.
-30720	Invalid date and time <date string>.