ehh, sorry, the compatibility mus not show like so 12.0 no
shold show like so :
12
.*.* since 9.0.1
firefox accept the "joker" = * for any.. but i dont now, if it is okey if writing :
*.*.*
for any versions in the next generations of FF..
like so now :
<?xml version="1.0"?>
<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:em="http://www.mozilla.org/2004/em-rdf#">
<Description about="urn:mozilla:install-manifest">
<!-- Required Items -->
<em:id>fdm_ffext@freedownloadmanager.org</em:id>
<em:name>Free Download Manager plugin</em:name>
<em:version>1.5.
6</em:version>
<em:targetApplication> <!-- Firefox -->
<Description>
<em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
<em:minVersion>1.5</em:minVersion>
<em:maxVersion>
14.*.*</em:maxVersion>
</Description>
</em:targetApplication>
<em:targetApplication> <!-- Netscape -->
<Description>
<em:id>{3db10fab-e461-4c80-8b97-957ad5f8ea47}</em:id>
<em:minVersion>8.0</em:minVersion>
<em:maxVersion>40.*.*</em:maxVersion>
</Description>
</em:targetApplication>
<!-- Optional Items -->
<em:creator>FreeDownloadManager.ORG</em:creator>
<em:description>Free Download Manager integration with Firefox browser.</em:description>
<em:homepageURL>http://freedownloadmanager.org/</em:homepageURL>
</Description>
</RDF>
for secure i have change the Version to 1.5.6 and set the Compatibility of FF to 14.*.*
ad for secure

netscape to 40 ..
best regards
Blacky