Trouble installing

Hi I'm having problems installing :-

Warning
JInstaller: :Install: Can't find Joomla XML setup file.
JInstaller: :Install: Can't find XML setup file.
JInstaller: :Install: Error SQL Table 'cumbriat_joom507.#__zhosmmaps_maptypes' doesn't exist
Extension Update: SQL error processing query: DB function failed with error number 1146
Table 'cumbriat_joom507.#__zhosmmaps_maptypes' doesn't exist
SQL =

ALTER TABLE `#__zhosmmaps_maptypes` ADD `url_template` text NOT NULL;

Package Install: There was an error installing an extension: com_zhosmmap.zip
Error
Error installing package


Thanks for your help

Sorry just noticed I've posted in wrong section....