An invalid or wrong extension can result in incorrect licensing information, which shows up as negative numbers on the GUI.
In order to fix the problem, complete these steps:
The former license file is probably the intermediate one that is generated when an upgrade is performed between Cisco CallManager 4.x and 5.x.
The intermediate file looks like this:
<HTML><BODY><?xml version="1.0"?><!DOCTYPE LicenseUpgrade SYSTEM\"http://tools.cisco.com/SWIFT/Licensing/DTD/SWIFTUpgradeLicenseRequest.dtd \"><LicenseUpgrade><ProductFamily>CCM</ProductFamily><ProductSku>CallManager</ProductSku><LicenseFeature><FeatureName>CCM_NODE</FeatureName><Version>5.1</Version><Count>2</Count></LicenseFeature><LicenseFeature><FeatureName>PHONE_UNIT</FeatureName><Version>5.1</Version><Count>506</Count></LicenseFeature><Timestamp>20070518202712103</Timestamp><Signature>8448ca7d2f2c0a50e0375e4fd3753b19dc495f43</Signature></LicenseUpgrade></BODY></HTML>