Mail crashes every 20 seconds after updating to 10.10.2.

Question

This morning i installed the update 10.10.2. for OS X Yosemite, after this update my mail dent work anymore..... every 20-30 seconds it hangs and i should force it to close the program........ Would like to know how to uninstall this ****** update. I can't send a simple e-mail to my customers.
Im using the mail program in combination with a Exchange account.
MacBook Pro (Retina, 15-inch, Early 2013), 2,8 GHz Intel Core i7, 16 GB 1600 MHz DDR3, Intel HD Graphics 4000 1024 MB OS X Yosemite 10.10.2...... baddest choice I ever made was installing this update.......

Answer 1

Try downloading and installing the OS X Yosemite 10.10.2 Combo Update. If that doesn't help then:
Reinstalling OS X Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Also see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
     Note: You will need an active Internet connection. I suggest using Ethernet
                 if possible because it is three times faster than wireless.