What does the notification “Can’t open data from next version” mean?

If the following notification appears,

it means that the project you want to open is saved in a next version.

For example, a project that is saved in a version SCIA Engineer 2013 can not subsequently be opened in an earlier version, for example, SCIA Engineer 2011.

Projects that are saved in a next version cannot be opened in a previous version. This does not apply to patches. If you want to check whether you can exchange files between different patches (eg 2012.0.183 and 2012.0.1049), you can look at the data ID number by going to Help -> About. If these numbers match in both patches, it is possible to exchange projects (in the figure below is the data ID number 118).