Wash ERROR: Failed to compile packet filter

Hello.
I'm getting the "Failed to compile packet filter" error when running "sudo wash -i wlan 1mon"

~$ sudo wash -i wlan1mon
Wash v1.5.2 WiFi Protected Setup Scan Tool
Copyright (c) 2011, Tactical Network Solutions, Craig Heffner <[email protected]>
mod by t6_x <[email protected]> & DataHead & Soxrok2212

[X] ERROR: Failed to compile packet filter

I'm using Kali Linux 2 and I have an alfa AWUS036H USB wireless card.
What should I do to fix this problem?
thanks in advance.

Hi,

Just tested AWUS036H in Kali 2.0...plug-n-play pretty much.
Everything runs fine if you remember to

Quote:

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airmon-ng check kill

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Quote:

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airmon-ng start wlan1

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Then try running wash.