Add the Cheat Engine installation folder (usually C:\Program Files\Cheat Engine ) to your exclusion list. To help narrow down the exact issue, let me know: What are you trying to scan? What value type (e.g., 4 Bytes, Float, Text) are you using? Did this error start happening after a recent game update ?

: Attempting a First Scan or Next Scan while leaving the primary "Value" text box blank or filled with invalid text syntax.