Children not accessible after saving to/loading OSGb

[torbeng]

The only solution to work around this problem I found so far is to save every group to an individual file. However, this introduces some problems. If I use the significantly faster OSGb format, the textures are all duplicated and the GPU memory consumption rises. As I cannot tell Vizard not to embed textures when saving as OSGb, I have to use the OSG format - the city model I used, split into individual blocks, is about 6GB - models only, which takes a while to load. If there is any way to get Vizard to understand that textures in two files are identical to save GPU memory, that would solve some of the issues.