Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.


4,890 Points

VirtualBox Error: The Selected Machine is INACCESSIBLE

I tried to download VirtualBox for the rails development course, and uninstalled it the first time. I tried to reinstall it and when I did the following error appeared.

The selected virtual machine is Inaccessible. Please inspect the error message shown below and press the Refresh if you want to repeat the accessibility check:

Runtime error opening '/Users/Home/VirtualBox VMs/railsapi_default_1454901717056_42656/railsapi_default_1454901717056_42656.vbox' for reading: -102(File not found.). /Users/vbox/tinderbox/5.0-mac-rel/src/VBox/Main/src-server/MachineImpl.cpp[740] (nsresult Machine::i_registeredInit()). Result Code: NS_ERROR_FAILURE (0x80004005) Component: MachineWrap Interface: IMachine {f30138d4-e5ea-4b3a-8858-a059de4c93fd}

Any Idea of why, and/or how to fix the problem?