Solution 24331: Error Message "Cannot Change: Invalid Input" Cannot Be Cleared When Creating a Slider Using the TI-Nspire™ Family Products.
How do I clear the "Invalid Input" error when using sliders on the TI-Nspire family products?
This condition occurs if a default variable (ex: v1, v2, v3...) is defined as a data type other than number (ex: list, equation, matrix...). To avoid this behavior, do one of the following two things:
• Change the variable used by the slider to another variable.
• Do not use v1, v2, etc variables when storing values.