Describe the error with as much detail as possible so that it may be
reproduced easily.

randrange throws an error when the difference between the min and max
values is >= 2,147,483,647
On CF8 and Railo2, the code does not throw an error, but the value returned
is negative. 

Provide a code snippet that demonstrates the issue.

<cfset iMax = CreateObject("java","java.lang.Integer").MAX_VALUE />
<cfoutput>
#randrange(1, iMax)#   <!--- works fine --->
<br>
#randrange(0, iMax-1)#   <!--- works fine --->
<br>
#randrange(0, iMax)#   <!--- throws an error --->
</cfoutput>

What is the expected output? What do you see instead?

expected output would be an integer in the range 0 - iMax

If you got an error message, what is that error message?

java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Unknown Source)

	at com.naryx.tagfusion.expression.function.randomRange.rand(Unknown Source)
	at com.naryx.tagfusion.expression.function.randomRange.execute(Unknown Source)
	at
com.naryx.tagfusion.expression.compile.CFFunctionExpression.Eval(Unknown
Source)

	at com.naryx.tagfusion.expression.compile.runTime.run(Unknown Source)
	at com.naryx.tagfusion.expression.compile.runTime.runExpression(Unknown
Source)
	at com.naryx.tagfusion.expression.compile.runTime.runExpression(Unknown
Source)

	at com.naryx.tagfusion.cfm.tag.cfTag.renderExpression(Unknown Source)
	at com.naryx.tagfusion.cfm.tag.cfTag.coreRender(Unknown Source)
	at com.naryx.tagfusion.cfm.tag.cfTag.render(Unknown Source)
	at com.naryx.tagfusion.cfm.tag.cfOUTPUT.render(Unknown Source)

	at com.naryx.tagfusion.cfm.tag.cfTag.coreRender(Unknown Source)
	at com.naryx.tagfusion.cfm.tag.cfTag.render(Unknown Source)
	at com.naryx.tagfusion.cfm.file.cfFile.render(Unknown Source)

What J2EE server are you running on and what Operating System?

OpenBD-jetty-6.1.9 on XP

If appropriate, include any information printed out in the bluedragon.log.