FIX: Divide-by-zero exception when you run the tux.exe tool on a USB flash drive in Windows Embedded Compact 7

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Introduction

This article describes an issue that triggers a divide-by-zero exception when you run the tux.exe tool on a USB flash drive in Windows Embedded Compact 7. An update is available to resolve this issue. Before you install this update, all previously issued updates for this product must be installed.

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Symptoms

Consider the following scenario:

You have a USB flash drive that uses the exFAT file system type.
You connect the flash drive to a device that's running Windows Embedded Compact 7.
You use the Windows Embedded Compact Test Kit (CTK) to test functionality and performance on the device.
You use the tux.exe tool to run a command that resembles the following on the CE target control window of Platform Builder:

>s tux -o -d fsdtst.dll -c "-p USBHDProfile -zorch"

In this scenario, you receive a divide-by-zero exception.

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Resolution

Software update information

A supported software update is now available from Microsoft as Windows Embedded Compact 7 Monthly Update (July 2015).

Note This Windows Embedded Compact 7 Monthly Update is available for download from the following Microsoft Download Center website:

Windows Embedded Compact 7 Updates

Prerequisites

This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement

After you apply this update, you must perform a clean build of the whole platform. To do this, use one of the following methods:

On the Build menu, click Clean Solution, and then click Build Solution.
On the Build menu, click Rebuild Solution.

You do not have to restart the computer after you apply this software update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this software update package has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Files that are included in this update package

File name	File size	Date	Time	Path
Mfs.cpp	37,216	30-Jul-2015	11:35	Private\Test\Baseos\Filesys\Fsdtst
Fsdtst.map	173,045	30-Jul-2015	13:15	Public\Test\Oak\Target\Mipsii\Retail
Fsdtst.rel	276,166	30-Jul-2015	13:15	Public\Test\Oak\Target\Mipsii\Retail
Fsdtst.dll	214,040	30-Jul-2015	13:15	Public\Test\Oak\Target\Mipsii\Retail
Fsdtst.map	176,075	30-Jul-2015	13:23	Public\Test\Oak\Target\Armv6\Retail
Fsdtst.rel	56,926	30-Jul-2015	13:23	Public\Test\Oak\Target\Armv6\Retail
Fsdtst.dll	185,368	30-Jul-2015	13:23	Public\Test\Oak\Target\Armv6\Retail
Fsdtst.map	173,314	30-Jul-2015	13:07	Public\Test\Oak\Target\X86\Retail
Fsdtst.rel	108,952	30-Jul-2015	13:07	Public\Test\Oak\Target\X86\Retail
Fsdtst.dll	152,600	30-Jul-2015	13:07	Public\Test\Oak\Target\X86\Retail
Fsdtst.map	176,168	30-Jul-2015	13:14	Public\Test\Oak\Target\Sh4\Retail
Fsdtst.rel	89,957	30-Jul-2015	13:14	Public\Test\Oak\Target\Sh4\Retail
Fsdtst.dll	160,792	30-Jul-2015	13:14	Public\Test\Oak\Target\Sh4\Retail
Fsdtst.map	173,045	30-Jul-2015	13:21	Public\Test\Oak\Target\Mipsii_fp\Retail
Fsdtst.rel	276,166	30-Jul-2015	13:21	Public\Test\Oak\Target\Mipsii_fp\Retail
Fsdtst.dll	214,040	30-Jul-2015	13:21	Public\Test\Oak\Target\Mipsii_fp\Retail
Fsdtst.map	176,078	30-Jul-2015	13:26	Public\Test\Oak\Target\Armv7\Retail
Fsdtst.rel	56,926	30-Jul-2015	13:26	Public\Test\Oak\Target\Armv7\Retail
Fsdtst.dll	181,272	30-Jul-2015	13:26	Public\Test\Oak\Target\Armv7\Retail
Fsdtst.map	176,078	30-Jul-2015	13:27	Public\Test\Oak\Target\Armv5\Retail
Fsdtst.rel	56,926	30-Jul-2015	13:27	Public\Test\Oak\Target\Armv5\Retail
Fsdtst.dll	185,368	30-Jul-2015	13:27	Public\Test\Oak\Target\Armv5\Retail