wxWidgets 2.8 and 2.9 are incompatible, the latter being the development version of what will eventually become wxWidgets 3.0
You need to update to the most recent 2.8.x version, 2.8.12 or higher.
wxWidgets 2.8 and 2.9 are incompatible, the latter being the development version of what will eventually become wxWidgets 3.0
You need to update to the most recent 2.8.x version, 2.8.12 or higher.