Upgrade from 6.x-1.23 to 6.x-1.24 error

    * warning: array_merge() [function.array-merge]: Argument #2 is not an array in /Library/WebServer/Documents/example.com/update.php on line 174.
    * warning: Invalid argument supplied for foreach() in /Library/WebServer/Documents/example.com/update.php on line 338.

I got the above warnings when upgrading our intranet site from 1.23 to 1.24.

However the actual updates went is without firing extra errors:

The following queries were executed
storminvoice module
Update #6102

    * ALTER TABLE {storminvoiceitem} ADD src_nid int
    * ALTER TABLE {storminvoiceitem} ADD src_vid int

Update #6103

    * ALTER TABLE {storminvoice} CHANGE tax `tax1` FLOAT DEFAULT NULL
    * ALTER TABLE {storminvoiceitem} ADD tax1app int
    * ALTER TABLE {storminvoiceitem} CHANGE taxpercent `tax1percent` FLOAT DEFAULT NULL
    * ALTER TABLE {storminvoiceitem} CHANGE tax `tax1` FLOAT DEFAULT NULL
    * ALTER TABLE {storminvoiceitem} ADD tax2app int
    * ALTER TABLE {storminvoiceitem} ADD tax2percent float
    * ALTER TABLE {storminvoiceitem} ADD tax2 float

Update #6104

    * ALTER TABLE {storminvoice} ADD src_nid int
    * ALTER TABLE {storminvoice} ADD src_vid int

Update #6105

    * ALTER TABLE {storminvoice} ADD tax2 float

stormattribute module
Update #6108

    * No queries

Update #6109

    * INSERT INTO {stormattribute} (domain, akey, avalue, weight, isactive) VALUES ('Project category search', '-', 'all', 0, 1)

stormexpense module
Update #6101

    * ALTER TABLE {stormexpense} ADD `expensestatus` VARCHAR(128) DEFAULT NULL

Update #6102

    * ALTER TABLE {stormexpense} CHANGE tax `tax1` FLOAT DEFAULT NULL
    * ALTER TABLE {stormexpense} ADD `tax1app` INT DEFAULT NULL
    * ALTER TABLE {stormexpense} ADD `tax1percent` FLOAT DEFAULT NULL
    * ALTER TABLE {stormexpense} ADD `tax2app` INT DEFAULT NULL
    * ALTER TABLE {stormexpense} ADD `tax2percent` FLOAT DEFAULT NULL
    * ALTER TABLE {stormexpense} ADD `tax2` FLOAT DEFAULT NULL
    * ALTER TABLE {stormexpense} ADD `subtotal` FLOAT DEFAULT NULL