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It looks like an issue with Extensis Font Manager.
Try turning off Auto Activation. Can you launch InDesign without using Extensis at all?
Yes, Eugene is correct, this is Extensis Suitcase Fusion's autoactivation plugin. You may find it easiest to remove the autoactivation plugin (ExtensisFontManagementIDCS5) from the InDesign Plugins folder; many seem to have trouble figuring out how to do so in the UI.
I've lost track of whether there's an Extensis fix for this, or if reverting back to another version works, etc. Do a search, this has come up frequently; also contact Extensis, who has free support.
Like we say in Italy, I was drowning in a glass of water.
Yup, I uninstalled Suitcase Fusion with TrashMe, but the activation plugins were still in the plugins folders.
Thank you so much, you saved my day (and maybe my salary)
You're welcome. I'm not really familiar with TrashMe, but I would be extremely wary of 3rd-party uninstallation tools. How is TrashMe supposed to figure out that Suitcase Fusion installs a file in the InDesign Plugins folder? [I could imagine several bad ways it could figure that out, but empirically, it appears that none of them were used.]
In the future, I think you're much better off using the vendor's supplied uninstallation tool. (Not that I use Suitcase Fusion. If it turns out it doesn't have one, I'm very sorry.)
Anyhow, glad you got it sorted out.