Unable to set registry value

[sjs4u]

Hi, I am using MSI to install my c# winform application. I am using custom action at the start of the installer. This is my latest version where I have added custom action. When I install latest version (fresh installation) then it works properly. But when I install latest version on previous version my custom action related registry key(e.g. ModeSelection Key) is not creating in the registry but some basic and common key(Filepath,language etc) are created successfully. What is the reason behind this? I wanted to create that registry key depeding upon the custom action selection. Thanks sjs

[dusty_dex]

You didn't say what the *full* key path is. ??

"It's true that hard work never killed anyone. But I figure, why take the chance." - Ronald Reagan That's what machines are for. Got a problem? Sleep on it.