meteor won't run if there's already a custom.bootstrap.json

[jameslaydigital]

It runs fine if I have a blank custom.boostrap.json, but when meteor restarts, I get this fatal error. The only way to fix it is to remove the generated files and generate a new blank custom.bootstrap.json file.

=> Started proxy.
=> Started MongoDB.

/home/dev/.meteor/packages/meteor-tool/.1.1.4.1a6s8px++os.linux.x86_64+web.browser+web.cordova/mt-os.linux.x86_64/dev_bundle/lib/node_modules/fibers/future.js
:245
                                            throw(ex);
                                                  ^
Error: Path reservation conflict: app/bootstrap/js/transition.js
    at [object Object]._.extend.reserve (/home/dev/.meteor/packages/meteor-tool/.1.1.4.1a6s8px++os.linux.x86_64+web.browser+web.cordova/mt-os.linux.x86_64/too
ls/builder.js:236:15)