Answer

Step 1: Creating Clean Logs

1. Make sure all instances of Tableau Prep are closed. 
2. Navigate to the My Tableau Prep Repository folder. The location is /Users/<username>/Documents/My Tableau Prep Repository.
3. In the My Tableau Prep Repository folder, rename the current Logs folder to Logs_Backup. This effectively archives the outdated logs and will force Tableau Prep to create a new and clean Logs folder when the issue is reproduced in Step 2 below.

Step 2: Reproduce the issue

1. Start Tableau Prep and reproduce the issue. 
2. Take screenshots of any error messages and attach to the support case along with a note indicating date and time when the issue occurred.

Step 3: Packaging and Sending Logs

1. Close Tableau Prep. This step ensures that all errors are recorded in the log file. 
2. Navigate to the My Tableau Prep Repository folder. 
   Mac: Ctrl-click the Logs folder, and select Compress “Logs”.
   Windows: Right-click the Logs folder, and select Send to > Compressed (zipped) folder.
3. Send the resulting .zip archive to Tableau Technical Support. 
   If the file is larger than 5MB, see Sending Large Files.