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"Padding is invalid and cannot be moved" error in Analyst software - WKB1012

Article number: 1012

SYMPTOMS

  • ACQUITY UPLC Logon prompt appears after initializing Analyst software
  • Entered Logon credentials
  • "Padding is invalid and cannot be moved" error appears
  • Cannot initialize inlet method due to error

ENVIRONMENT

  • Analyst Software version 1.6
  • ACQUITY UPLC System June 2011 Driver Pack (v1.50)

CAUSE

Corruption in a registry key associated with Analyst control of UPLC systems

FIX or WORKAROUND

  1. Start > Run, enter REGEDIT.
  2. Delete the registry key "SerializedObjects".

Windows XP:
Delete: HKeyLocalMachine\Software\Waters\Instruments\ACQ-AAO\ServiceSettings\SerializedObjects

Windows 7:
Delete: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Waters\Instruments\ACQ-AAO\ServiceSettings\SerializedObjects

ADDITIONAL INFORMATION

If RUN is not found under the START menu, press the Windows Flag and R keys on the keyboard at the same time.

The deleted registry key will be recreated at the next logon to Analyst.

UPBINARY, UPSMPMGR

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