Installation error

[Nikias]

Hey! I can't install the extension. When installing, it gives an error:

A warning
JInstaller:: Install: Could not find XML file to install package.
JInstaller: :Install: Ошибка SQL: Table 'ck45013_matrix.#__abauthor' doesn't exist
Extension: Update: Failed to execute SQL query: Database error with number 1146.
Table 'ck45013_matrix.#__abauthor' doesn't exist
SQL =

ALTER TABLE #__abauthor ADD lastname VARCHAR( 255 ) NOT NULL DEFAULT '' AFTER id;

[federica]

Hi Nikias,
"Could not find XML file to install package" means installation xml file is not readible or may be corrupted. Download Abook installation file again. Check if all website folder are writeble. Then install Abook again.