Important: Read this before posting to this forum

1. This forum is for questions related to the use of Apollo. We will answer some general choice modelling questions too, where appropriate. We cannot answer questions about how to estimate choice models with other software packages.
2. There is a very detailed manual for Apollo available at http://www.ApolloChoiceModelling.com/manual.html. This contains far more detailed descriptions of the various Apollo functions than the help files within the package. Users should ensure that they have followed the correct syntax when using the functions.
3. Users should finally make sure that they have updated to the latest official release of Apollo. You can check which version you are running by entering packageVersion("apollo"). Then check what is the latest full release (not development version) at http://www.ApolloChoiceModelling.com/code.html
4. To update to the latest official version, just enter install.packages("apollo"). To update to a development version, download the appropriate binary file from http://www.ApolloChoiceModelling.com/code.html, and install the package from file
5. Users should check that the same issue has not already been addressed in the forum - there is a search tool.
6. If the above steps do not resolve the issue, then please ensure you provide full details on the issue, including the entire code and output.
7. When submitting a post, please note that it will not immediately appear on the forum, but will be checked by a moderator first. This may take a day or two at busy times. There is no need to submit the post multiple times.

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