Re: [AMBER] tip3p water model in amber14

From: Swisher, Justin S <>
Date: Fri, 26 Feb 2021 16:59:07 +0000

That is good to know.

To clarify though, does the syntax error specifically apply to it not fully loading the forcefield and thus not loading in the OW and HW types? I only ask because after this error it does show the loading of all the ions and other aspects of the file as if it was working normally.

I appreciate your help, this has been insightful!

From: David A Case <>
Sent: Thursday, February 25, 2021 7:54 PM
To: AMBER Mailing List <>
Subject: Re: [AMBER] tip3p water model in amber14

On Fri, Feb 26, 2021, Swisher, Justin S wrote:
>2.) source leaprc.water.tip3p (It does say ERROR: syntax error Couldn't
>scan NUMBER from (+)

Well, this certainly sounds bad: the OW and HW types are created in this

I'm not sure how to attack this problem. By far the most straightforward
thing to do is to update to AmberTools20. Trying to get others to dig up
code from nearly 7 years ago is going to be a losing propostion. Plus,
we don't really know what code you have: the introduction of files like
leaprc.water.tip3p wasn't made until Amber16. So it seems possible that
you are mixing files from different releases.

...hope this helps....dac

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