How to fix Mail app Auto-Complete freezing problem

The issue
Mail app keep showing spinning wheel instead of auto-complete when type in email address.

1. Trash the entire folder of
 ~/Library/Containers/com.apple.mail

2. Restart Mail app

How to find all the missing textures in Cinema 4D

1. While the project is open, click Mode, Project Info


2. Click on the Textures tab



3. Mark missing textures




4. All the missing textures are marked with red X, click browse button and search the image name in finder to replace.

How to make element loopable with alpha channel in After Effects

1. Go to 1 second on the selected the layer, shift+cmd+D split the layer, and move the top layer to the end. 

2. Animate the top layer opacity from 0-100 (if your layer does not contain alpha, then you are done)

3. Animate the bottom layer opacity from 100-0

4. Change both layer's blending mode to Alpha add