Upgraded to the new 5.0 and have had loads of client errors. Please don't direct me to Wiki, tell me how to correct this problem. Using 2000 pro on a P3 and 2 cpu's at 1012 gz. and 1024 of 133 ram. If this can't be fixed I'm going back to 4.0, or will try one of the other set ups.

---

First we need to know what kind of errors?
Which version 4 ---- versions before 4.2 need to be uninstalled before installing 5.x.x.
Which version 5 ----- 5.2.13?
We need detail if we're going to help.

---

Boinc V7.2.42
Win7 i5 3.33G 4GB, GTX470

From the WIKI, the place you fear to tread.......

-1073741819 (0xc0000005)
***UNHANDLED EXCEPTION**** Reason: Access Violation (0xc0000005) at address 0x0040660E read attempt to address 0x0440A6CC

-1073741674 (0xc0000096)
***UNHANDLED EXCEPTION**** Reason: Privileged Instruction (0xc0000096) at address 0x00404CA6

General
Message Type: Error Message
Actually, we geeks call this a "Fatal Error", this means that the whole world comes to an end …
This error can be the result of a programming error in the code for:
The BOINC Client Software
The Science Applications
Any other program running on the computer
The Operating System
On the other hand, it could be because it is Tuesday.
Seriously, this is a serious error within the running application program and it is one that computer hardware and Operating System manage when the program attempts to do something that is a no-no.

UNHANDLED EXCEPTION - Access Violation - Read Attempt
Many causes of 0xc0000005 errors are due to a device driver, and especially graphics drivers in the case of SETI@Home. But those usually occur not in the users program but in the driver.
http://boinc-doc.net/boinc-wiki/index.php?title=%2A%2A%2AUNHANDLED_EXCEPTION%2A%2A%2A%2A_Reason:_%27%28reason%29%27

---

And the beat goes on
Sonny and Cher

BOINC Wiki