Sorted:

problem about gtk3-Collection of common programming errors

exception: Access violation-Collection of common programming errors

Can't open email in beta; can't change to classic; can't access help; error messages below:?-Collection of common programming errors

Organic groups organizational problem-Collection of common programming errors

Error Simple Login “undefined method `key?' for nil:NilClass”-Collection of common programming errors

GNUStep Undefined reference-Collection of common programming errors

Sudden Change in Entire Configuration?-Collection of common programming errors

problem about template-engine-Collection of common programming errors

NameError in python-Collection of common programming errors

Hope and luck are inner workings of probability?-Collection of common programming errors