Hi Rohan,
Thanks for emailing the file.
For those following the thread, the issue was in 2 new user-generated Title Blocks which were missing a layer, "Title Block Drawing Area", and the rectangle it contains; this layer and rectangle allow the Title Block to size itself to fit the drawing into which it is inserted.
The quick fix is to show the layer in a default template and copy the rectangle into your user-generated template; pasting will create the layer from which the rectangle was copied.