Invalid project description

I am trying to import a Flex project into a new workspace. I am getting the
error above.
Here is a project file:
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>Xxxxxxx</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>com.adobe.flexbuilder.project.flexbuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.ui.externaltools.ExternalToolBuilder</name>
<triggers>full,incremental,</triggers>
<arguments>
<dictionary>
<key>LaunchConfigHandle</key>
<value>;project;/.externalToolBuilders/CopyToDebug.launch</value>
</dictionary>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.ui.externaltools.ExternalToolBuilder</name>
<triggers>full,incremental,</triggers>
<arguments>
<dictionary>
<key>LaunchConfigHandle</key>
<value>;project;/.externalToolBuilders/Local Resources.launch</value>
</dictionary>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>com.adobe.flexbuilder.project.flexnature</nature>
<nature>com.adobe.flexbuilder.project.actionscriptnature</nature>
</natures>
<linkedResources>
<link>
<name>bin-debug</name>
<type>2</type>
<locationURI>DOCUMENTS/Yyyyyyyyyyy</locationURI>
</link>
</linkedResources>
</projectDescription>

Any idea what might be wrong?

Thanks