It looks as if your attempt to retrieve the previous feature conditions is not working, and therefore you wil have to determine which features are installed by using a custom action, for example, and then use this in your conditions.

I read in the manual at "Preparing for Software Updates" the section "About patches : you cannot change feature states, leave certain features installed, or perform custom actions based on the version of the installed application."



i don't think i can use a custom action in a MSP to determine whitch features are installed ?

Thinking about it, would it not be better for your patch to install all updated files? I assume you are using full files in your patch rather than file deltas.



Assuming that a user has not installed all features, but applies the patch and only patches the features that he has installed. What happens if the user then runs the install in maintenance mode and adds a feeature? That feature will then be at a different patch level to the other features. By installing the full files for all features in your patch, and making sure they have a higher file version or a newer date/time, then installing a new feature will not downgrade the patch files and your additional feature will then be at the current patch level.

Yes i install full files in the patch.



But when i add a new file in my script, its allways a full file.

The log says: "Patch API could not create a small patch; using whole upgraded file. Including entire file: [path-filename]"



This new file is just for users that have installed that feature so there is no maintenance mode.



i'll hope there comes a solutionn for this soon.



for now i've made a quick and dirty solution:

Under condition there are about 10 files installed. Now i want to add the 11th file but will not be installed because of the Wise-patch do not works with the previous condition. I have now put the new file in an existing Component/Files (one of the ten) and it works.

I know, this is not allowed en WIS generate an error when i start check tables (because of 2x dll in one component) but everything is working with this solution.



Can you tell me why WIS give this error and what goes wrong? (seem to be nothing goes wrong, everything is installed and finished as the way it should be)

Can you clarify which error Wise is generating? I've looked back through the thread but cannot figure it out.

The error when i have two dll's in one Component is:



"Contains 2 executable files. Microsoft's component guidelines allow only one executable, such as an .EXE, .DLL, .OCX, etc., per component.

Component: TextDisplay.dll1254"



The colour of the Component Icon in the Components-tab is now red (see the attachment)



(I have added the Siemens.dll in the Component of the TextDisplay.dll)

Wise reports errors where the project does not conform to Microsoft rules. However, if it works in your situation, and you have tested it carefully against all possible installation configurations, then your solution is good to use.

Bear in mind that the patch generation is actually handled by Microsoft patch DLLs which are included in the Wise product, hence the strict application of MS rules.