Maya 2022 keeps crashing when I run ackNegateKeys script

[venechpsn]

Hi everyone!

My Maya 2022 keeps crashing without any error messages every time I try to run the ackNegateKeys script. Does anyone have any suggestions about what to do to fix it? Any other script works fine. Here is the code:

global proc ackNegateKeys() {
	global string $ackSetup_pivot;
	
	//set default value if variable doesn't exist
	if ($ackSetup_pivot == ""){
		$ackSetup_pivot = "left";
	}
	
	//only run if at least one key is selected
	$keyCount = `keyframe -an keys -q -keyframeCount`;
	if ($keyCount != 0) {
	
		float $pivotTime;
		float $pivotValue[];
	
		if ($ackSetup_pivot == "last"){
			$pivotValue = `keyframe -lastSelected -q -valueChange`;	
		}	
	
		//loop over selected curves and process independently
		string $selectedCurves[] = `keyframe -selected -q -name`;
		for ($c = 0; $c < size($selectedCurves); $c++){
			//channel to use for this pass
			$channel = $selectedCurves[$c];
		
			//get array of key times in selection (to find closest match key)
			$timeArray = `keyframe -selected -q -timeChange $channel`;
			
			//find first frame time
			$lastkey = `keyframe -q -lastSelected $channel`;
			$firstKey = $lastkey[0];
			for ($j = 0; $j < size($timeArray); $j++){
				if ($timeArray[$j] < $firstKey){
					$firstKey = $timeArray[$j];
				}
			}

			switch ($ackSetup_pivot){
				case "left":
					$pivotTime = `findKeyframe -which "previous" -time $timeArray[0] $channel`;
					$pivotValue = `keyframe -time $pivotTime -q -valueChange $channel`;
					break;
				case "right":
					int $lastKey = size($timeArray) - 1;
					$pivotTime = `findKeyframe -which "next" -time $timeArray[$lastKey] $channel`;
					$pivotValue = `keyframe -time $pivotTime -q -valueChange $channel`;
					break;
			}
			
			//flip it (selected only)
			$selected = `keyframe -selected -q -indexValue $channel`;
			for ($i = 0; $i < size($selected); $i++){
				scaleKey -index $selected[$i] -valuePivot $pivotValue[0] -valueScale -1 $channel;
			}
			
		}		
	}
}

I attached a screenshot with the hotkey for this script. The application crashes right after hitting Alt+S