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Unhandled exception at 0x749026df in s7uvmapx.exe

1/9/2024 2:13 PM	Rate (0)
Madadi Bronze Member Joined: 12/28/2016 Last visit: 12/14/2025 Posts: 435 Rating: (55)	hello I have a project with step 7 v5.5 and wincc 7.3.0.1 When I compile pc station, I get error AS-OS Eng. When I try to fix the problem using debug program, I get the following error. (Unhandled exception at 0x749026df in s7uvmapx.exe: 0xC0000005: Access violation writing location 0x00000000) Using WinCC reset did not solve the problem. If I create a new PC station and compile it, there is no error, but the PC station that has the original program has this problem. How can I solve the problem? How can I transfer the faulty PC station program to a new PC station without causing problems? Attachment Screenshot 2024-01-09 174137.png (294 Downloads)
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1/10/2024 6:17 AM	Rate (0)
Madadi Bronze Member Joined: 12/28/2016 Last visit: 12/14/2025 Posts: 435 Rating: (55)	If I disable the tag and messages option, there is no error anymore. But how do I know which tags are causing the error? If this option is disabled, it is no longer possible to create new tags? Attachment Screenshot 2024-01-10 094055.png (289 Downloads)
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1/27/2024 7:53 PM	Rate (0)
Madadi Bronze Member Joined: 12/28/2016 Last visit: 12/14/2025 Posts: 435 Rating: (55)	Has anyone ever encountered this problem?
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2/2/2024 9:20 AM	Rate (0)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 1/9/2026 Posts: 16629 Rating: (1944)	Hello Madadi please check also if your used Step7 Version suits to your WinCC Version: https://support.industry.siemens.com/cs/de/en/view/64847781 (if not use the correct SPs ) bye Murof
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