Parameter Must Be Positive
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Parameter Must Be Positive (also referred to as PMBP) is a rare error found in Return To Wonderland. Parameter Must Be Positive errors occur when the game passes a negative integer as a parameter to a function when a positive integer is expected.
Known Causes
The following events can cause a Parameter Must Be Positive.
- Return to Wonderland: Doing certain things with 38 08.
- Return to Wonderland: While editing a sign, going to an empty line other than the first, pressing space and then pressing backspace.[1]