Cannot upload my Addon to AMO website

[Srinivasa B]

I have developed an Add-on, I am having issues in uploading my .xpi
file in AMO website.

I get the following error message in the addon submission web page
when I try to upload my .xpi file.

AMO site error The version of this add-on is invalid: versions cannot
contain spaces

These are the tags in my install.rdf file .

<em:version>1.0</em:version>
<em:targetApplication>
<Description>
<em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
<em:minVersion>0.9</em:minVersion>
<em:maxVersion>3.6a1pre</em:maxVersion>
</Description>
</em:targetApplication>

I don't know what's wrong with this.Please help me.

Thanks
Srini Balemarthy