Have this issue too after upgrading to 1.6.1.0: (all non-official-prestashop modules disabled)
Notice op lijn 75 in bestand /usr/share/nginx/html/webstore-test/tools/smarty/sysplugins/smarty_internal_templatebase.php(157) : eval()'d code
[8] Undefined index: prestaShopVersion
Notice op lijn 75 in bestand /usr/share/nginx/html/webstore-test/tools/smarty/sysplugins/smarty_internal_templatebase.php(157) : eval()'d code
[8] Trying to get property of non-object
Notice op lijn 418 in bestand /usr/share/nginx/html/webstore-test/tools/smarty/sysplugins/smarty_internal_templatebase.php(157) : eval()'d code
[8] Undefined index: prestaShopVersion
Notice op lijn 418 in bestand /usr/share/nginx/html/webstore-test/tools/smarty/sysplugins/smarty_internal_templatebase.php(157) : eval()'d code
[8] Trying to get property of non-object
Notice op lijn 59 in bestand /usr/share/nginx/html/webstore-test/tools/smarty/sysplugins/smarty_internal_templatebase.php(157) : eval()'d code
[8] Undefined index: prestaShopVersion
Notice op lijn 59 in bestand /usr/share/nginx/html/webstore-test/tools/smarty/sysplugins/smarty_internal_templatebase.php(157) : eval()'d code
[8] Trying to get property of non-object
Notice op lijn 287 in bestand /usr/share/nginx/html/webstore-test/tools/smarty/sysplugins/smarty_internal_templatebase.php(157) : eval()'d code
[8] Undefined index: prestaShopVersion
Notice op lijn 287 in bestand /usr/share/nginx/html/webstore-test/tools/smarty/sysplugins/smarty_internal_templatebase.php(157) : eval()'d code
[8] Trying to get property of non-object