由于CE5出现了问题，全部卸载后再重装后执行菜单中target下的Connectivity Options...时出现如下错误：
我系统中已经安装有vs2005及CE6。百思不得其解，按照网上的解决方案
1) Shutdown all instances of PB (version 5.0 and later) and make sure
Cepb.exe, CeSvcHost.exe (CeSvcH~1.exe) and DeviceEmulator.exe are gone from
the task manager.
2) Back up the C:/Documents and Settings/<user>/local settings/application
data/microsoft/corecon folder
3) Purge that folder [This will destroy all previously configured device
settings. It is important to make a backup as in step 2 if you need to
retain the other device settings and revert back].
4) Back up C:/Documents and Settings/all users/application
data/microsoft/corecon/1.0/addons folder to something outside of
5) Purge that addons folder under the corecon/1.0
6) Create a new one by that name under the corecon/1.0 folder
7) Copy C:/Program Files/<PB Install folder>/CoreCon/SDK/XSL/Addons/*.xsl to
the new .../coreCon/1.0/Addons folder you created.
8) Also copy C:/Program Files/<PB Install
folder>/CEPB/bin/microsoft.platformbuilder500.servicecategory.xsl to the
above addons folder.
9) Relaunch PB and try creating and configuring a new device.
见网址：http://www.eggheadcafe.com/software/aspnet/29534746/cant-set-the-connectivit.aspx
也不能解决，后不得已在虚拟机的干净的系统中重新安装CE5后再把C:/Documents and Settings/<user>/local settings/application
data/microsoft/corecon 目录下的所有文件复制到出错的系统中相应的目录覆盖原有文件后解决，也可以从其它正常使用的系统中的相应文件拷来覆盖
这个问题估计是微软在卸载CE5时没有卸干净的缘故。