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  1. It may be that the IDD is not being read. You might need to ensure that step 10 from the wiki page is done.

  2. EP-Launch doesn't work automatically with the configuration of the build environment. If you want to use EP-Launch you need to copy the EP-Launch.exe, EPL-RUN.bat, and the Energy+.idd files to the Products\Debug directory under your build directory. That should be enough to make EP-Launch work. The IDF Editor program needs to be in the same directory or a child directory to the Energy+.idd file so you can copy it to that directry or the Product directory since both should have the Energy+.idd file. Note that if you update the Energy+.idd.in "source" file (in the IDD directory) it will automatically update the version in the Products directory but you will have to manually copy it to the Products\Debug directory for EP-Launch.exe.

  3. The "MSCOMCTL.OCX is missing or invalid" sounds like that OCX is not registered. It sounds like an installer issue, the development team has heard of some users having errors like this. I would recommend you install EnergyPlus 8.1 from here.

  1. It may be that the IDD is not being read. You might need to ensure that step 10 from the wiki page is done.

  2. EP-Launch doesn't work automatically with the configuration of the build environment. If you want to use EP-Launch you need to copy the EP-Launch.exe, EPL-RUN.bat, and the Energy+.idd files to the Products\Debug directory under your build directory. That should be enough to make EP-Launch work. The IDF Editor program needs to be in the same directory or a child directory to the Energy+.idd file so you can copy it to that directry directory or the Product directory since both should have the Energy+.idd file. Note that if you update the Energy+.idd.in "source" file (in the IDD directory) it will automatically update the version in the Products directory but you will have to manually copy it to the Products\Debug directory for EP-Launch.exe.

  3. The "MSCOMCTL.OCX is missing or invalid" sounds like that OCX is not registered. It sounds like an installer issue, the development team has heard of some users having errors like this. I would recommend you install EnergyPlus 8.1 from here.