Meteor won'r run on nfs

I am trying to run metoer on a VM with a filsystem mounted over nfs. If I create my meteor project on the nfs filesystem, it fails to start (errmsg below). Doing the same thing on a local fileystem works fine.

Any clues? Is there a way to further debug this:

Here is the start of the stack trace:

/home/marc/.meteor/packages/meteor-tool/.1.1.4.xvre8c++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: EACCES, open '/home/marc/proj/simian/meteor/Tutorials/.meteor/local/.build864364.build/programs/.build214798.server/app/Tutorials.js’
at Object.Future.wait (/home/marc/.meteor/packages/meteor-tool/.1.1.4.xvre8c++os.linux.x86_64+web.browser+web.cordova/mt-os.linux.x86_64/dev_bundle/lib/node_modules/fibers/future.js:398:15)