Erase a photo slide show
I have created multiple trial slide shows before the final version. I have tried to control click a trial slide show to erase it from my projects list in I photo. I am on a Mac pro.
MacBook Pro 13″, macOS 10.14
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You're saying you don't this this, right?
What happens when you try?
Give this a try: As a test launch Photos with the Option key held down and create a new, test library. Import some Photos, create a slideshow and test to see if the same problem persists. Does it? This tells us if the problem is limited to your current library or is more wide spread. Then open your current library and try deleting again.
If that fails boot into Safe Mode according to How to use safe mode on your Mac and test to see if the problem persists. Reboot normally and test again.
NOTE 1: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following;
• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts
• Deletes font caches, kernel cache, and other system cache files
NOTE 2: if you have a wireless keyboard with rechargeable batteries connect it with its charging cable before booting into Safe Mode. This makes it act as a wired keyboard as will insure a successful boot into Safe Mode.