Laurent Declercq posted an announcement on the IspCP support forum that IspCP 1.0.7 will no longer support older versions of Ubuntu Linux
Dear ispCP users ;IspCP 1.0.7 for Ubuntu will only support 10.04 LTS and higher
Beginning with ispCP 1.0.7 (including all RC releases), support will only be available for the two last LTS Ubuntu versions. Also, due to some requirement (such as Perl version), since ispCP 1.0.7 (including all RC releases), the minimum version to run ispCP is Ubuntu 10.04 LTS (Lucid Lynx).
Before upgrade to ispCP 1.0.7, you must upgrade your Ubuntu version a least to Ubuntu 10.04 LTS (Lucid Lynx).
Good luck with ispCP
Note: Support for prior versions was removed from ispCP 1.0.7 at r3475.