Summary
Delete a certificate from the InstallShield project to prevent error extracting digital information from file ISDEV : error -6258Synopsis
If you no longer require signing and your project previously had signing enabled.ISDEV : error -6258: An error occurred extracting digital signature information from file "C:\InstallShield Projects\My Project Name-1\Product Configuration 1\Release 1\DiskImages\DISK1\My Project Name-1.msi". Make sure the digital signature information provided in the IDE is correct.
You should be able to disable the signing and remove the certificate information in the project.
Discussion
If you no longer require signing and your project previously had signing enabled disable the signing and remove the certificate information on the signing tab of the release settings.There are a number of ways to disable certificate settings.
1) Using the Releases view using the Signing tab of the Release settings delete all the entries and set the sign files option to 'No'.
Reference image immediately below for example
2) Using the Project Assistant view on the Build Installation page verify Digitally sign setup check box is not enabled
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