Learn how to reset Pixelmator, as well as email us the Pixelmator’s Preferences files and Containers folder for the investigation.
Quit Pixelmator (Pixelmator > Quit Pixelmator). After that, open the Library folder. By default, the Library folder is hidden. To open it, hold down the Option key, and then choose Go > Library within the Finder.
In the Library window, open the Preferences folder and locate the files titled, “com.pixelmatorteam.pixelmator.” Select the files and move them onto the desktop (usually there are two or more files, however, if there's none, simply continue to the next step.)
Note: By default the Finder window's View is set to “Icon view.” To switch to the same view as in the screenshot above, click the “Column view” button.
Go back to the Library and look for the Containers folder. Within the Containers folder there should be a folder titled, “com.pixelmatorteam.pixelmator.” Move this folder onto the desktop as well.
Note: Deleting the com.pixelmatorteam.pixelmator folder resets your custom brushes, gradients, and shape presets to default settings. If you want to save them, open this folder and go to Data > Library > Application Support > Pixelmator. Then copy the Brushes folder as well as SavedGradients.pxg and SavedSwatches.pxs files to any other location. You will be able to import them back into Pixelmator later.
Attach the files to the message and email them to us at email@example.com.
If the files are too large to be attached into the email, click (or copy and paste) the following link: http://upload.pixelmator.com. Then, click the Choose Files button, select the files to upload and click Choose.
Note: You'll need to compress the files first in order to be able to upload them to the server. To do that, select the files you'd like to compress, Control-click onto any of them and choose Compress.
When the file finishes uploading, Control-click the link below the Choose File button, and then select Copy Link. Paste the link into the message and email to us.
You can then trash these files. Pixelmator is reset now.