The application ran your source text through the Inform 7 compiler, as usual, but the compiler unexpectedly failed. This should not happen even if your source text is gibberish, so you may have uncovered a bug in the program.

When a Mac OS X program like the I7 compiler fails, it typically returns a numerical error number: this time, the error code was 1, so I7 probably stopped because of a fatal file-system error.

It is very unlikely that your computer is at fault. More likely causes are:

• disc space running out on the volume holding the project;
• trying to run a project from a read-only volume, such as a burned CD or DVD;
• trying to run a project which belongs to another user, whose files you have no permission to alter.

However, if you think it more likely that the Inform 7 compiler is at fault, please check that you have the currently distributed build of the system: if you have, please consider taking the time to fill out a bug report form and email it to the author.