Help With Errors

I need someone who knows how to troubleshoot Drupal in a big way.

Current issues:

Adding any new type of node or editing a node results in the following message:

Unsupported operand types in /var/www/includes/common.inc on line 1275

However, the node is added or changed. It's just extremely annoying.

Dates won't save at all. I input them, they disappear.

My users can't use Image Assist/Upload since I added FCK Editor. The button is there, but doesn't work.

I have searched and found that the Comment Notify module was causing some of the unsupported operand errors and have disabled it... that seemed to help but the next day the errors reoccurred.

I need someone who can work on this now, not next week. Please give me your estimate or hourly wage when you contact me- I don't have time to go back and forth with chitchat.

Payment via Paypal.

My install includes:
MySQL database 5.0.67
PHP 5.2.6-2ubuntu4
Web server Apache/2.2.9 (Ubuntu) PHP/5.2.6-2ubuntu4 with Suhosin-Patch

Drupal 6.6

Akismet 6.x-1.0-beta1

Bbcode 6.x-1.2

Block Theme 6.x-1.0-beta1

Bookmarks 6.x-1.4-4

Calendar 6.x-2.0-rc6

CCK Fieldgroup Tabs 6.x-1.x-dev (2008-Oct-01)

Checkout (content locking) 6.x-2.2

Node clone 6.x-1.0

Content Construction Kit (CCK) 6.x-2.1

Currency Exchange 6.x-1.0

CCK Currency 6.x-1.0

Custom Breadcrumbs 6.x-1.4

Custom (Form) destination 6.x-1.x-dev (2008-May-25)

Date 6.x-2.x-dev (2008-Dec-02)

DHTML Menu 6.x-2.2

Directory 6.x-1.0-alpha1

Read More Tweak 6.x-3.x-dev (2008-Aug-13)

FCKeditor - WYSIWYG HTML editor 6.x-1.3-rc5

Fivestar 6.x-1.13

Front Page 6.x-1.2

Global Redirect 6.x-1.0

Header image 6.x-1.x-dev (2008-Jul-28)

Image 6.x-1.x-dev (2008-Oct-20)

Image Assist 6.x-1.0

Job Posting 6.x-1.10

Link 6.x-2.5

Mass Change 6.x-1.0-rc

Messaging 6.x-1.0

Node Convert 6.x-1.2

Notifications 6.x-1.0

Pathauto 6.x-1.1

Pong Game 6.x-1.2

Printer, e-mail and PDF versions 6.x-1.0

Sections 6.x-1.2

jQuery UI Tabs 6.x-1.0

Taxonomy Defaults 6.x-1.x-dev (2008-Apr-14)

Taxonomy Redirect 6.x-1.3

Token 6.x-1.11

Views 6.x-2.x-dev (2008-Nov-07)

Views Bulk Operations 6.x-1.2

Voting API 6.x-2.0-rc1

Webform 6.x-2.3