Learn to find Pixelmator's crash log in Console.
Open the Console. Go to Finder > Applications > Utilities, and double-click the Console app.
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 “List view” button.
In the Console window, under the DIAGNOSTICS AND USAGE INFORMATION click the disclosure triangle to reveal the User Diagnostic Reports. Select the report that is titled Pixelmator_date-time_Mac’s name.crash and then copy the log from the right pane.
Tip: To copy the crash log, click inside the log pane and select the text by choosing Edit > Select All. Then choose Edit > Copy.
Paste the log into the message window (Edit > Paste) and email it to us at firstname.lastname@example.org.