Suddenly my drawing has vertical and horizontal dashed lines running to infinity off all edges of the page. What happened?

This is a common question with an easy fix. Go to Vectorworks Preferences/Edit tab and uncheck the Snap to Loci option. When this option is on, any 2D locus on the drawing will exude these lines.

What is the best way to send or receive a file via email?

When you send an email to someone, you have no idea of the route it will take. It may be very direct or travel though a variety of different servers and half way across the country. When that email contains an attachment, the attachment can easily become corrupted by this circuitous route or by an operating system it encounters.

For these reasons, you should always compress attachments because it encapsulates the file and also makes transmission faster. Generally, it is best to use a non platform specific compression method such as Zip.

In Mac OSX, the Archive feature will create a Zip file that will be valid on both Mac and Windows. To access it, right click (or press Ctrl and click) on the file you wish to compress, then choose Compress... from the Contextual menu.