The "The operation cannot complete because of an unknown error (PARM)" is a notorious, long-standing bug in Adobe Illustrator that typically strikes when you try to save files, use the Image Trace tool, or modify text boxes
: Select your text elements and press Ctrl + Shift + O (Windows) or Cmd + Shift + O (Mac) to Create Outlines . This eliminates font rendering bugs tied to the bounding box tool. The "The operation cannot complete because of an
Try moving the contents of your file into a fresh Illustrator document to isolate if a specific object is causing the crash. 6. Roll Back to a Previous Version It is almost always a —between plug-ins and
Often, the error is isolated to a specific document. If the error is file-specific, create a new file and copy your assets over: fonts and the text engine
Adobe Illustrator's "The operation cannot complete because of an unknown error (PARM)"
The [PARM] error is frustrating precisely because Adobe labels it "unknown." But as we’ve seen, it is far from mysterious. It is almost always a —between plug-ins and the core app, fonts and the text engine, the GPU and the display renderer, or permissions and file operations.