Daz 4.8 pc won't open
I click on the daz icon and it loads seemingly as normal but then the scene builder window shows up - the rest of the interface won't open. I can close the scene builder window and interact with that window but the main interface won't open, even though it says there's a window open. Help me, please? I'm on windows 7.

Comments
How did you install DS4.8, was it using DIM (DAZ Install Manager)?
If so, the simplest thing may be to uninstall/reinstall again. It only takes a few moment ins DIM to do that. I use Win 7, and the only time I had a problem, was when DAZ Studio was open (un-noticed) when I updated.
I've now uninstalled and reinstalled with DIM, the problem persists. :(
Other programs running? Especially security software?
There is microsoft security essentials running, but that's never stopped it before. I was happily using DAZ, then I tried to load a previous project and since then it's been broken.
Look in the log file...
Users/you/ApplicationData/Daz 3D/Studio 4
Users/you/AppData/something similar/to above...
Post any part that shows a clear error message.
I have no idea what I'm looking for in the log file I've found. I found a lot of things saying NOT INITIALIZED
Ok...the last few lines before the Not Initialized and first 3 or 4 of those lines.
GL_AMDX_name_gen_delete : NOT INITIALIZED
GL_AMDX_random_access_target : NOT INITIALIZED
GL_AMDX_vertex_shader_tessellator : NOT INITIALIZED
GL_AMD_texture_cube_map_array : NOT INITIALIZED
GL_ARB_texture_snorm : NOT INITIALIZED
GL_EXT_copy_buffer : NOT INITIALIZED
GL_EXT_shader_atomic_counters : NOT INITIALIZED
GL_EXT_texgen_reflection : NOT INITIALIZED
GL_EXT_texture_buffer_object_rgb32 : NOT INITIALIZED
GL_EXT_texture_compression_bptc : NOT INITIALIZED
GL_EXT_texture_lod : NOT INITIALIZED
GL_SUN_multi_draw_arrays : NOT INITIALIZED
WGL_EXT_swap_control : NOT INITIALIZED
WGL_ARB_create_context_profile
: NOT INITIALIZED
WARNING: dzneuraymgr.cpp(261): Iray WARNING - module:category(LINK:PLUGIN): 0.0 LINK plug warn : loading C:\Program Files\DAZ 3D\DAZStudio4\libs\iray\nvcuvid_video_decoder.dll: The specified module could not be found.
Iray INFO - module:category(FREIMG:IMAGE): 1.1 FREIMG img info : fi_xpm (build 231000.11582, 29 Apr 2015) initialized
WARNING: dzneuraymgr.cpp(261): Iray WARNING - module:category(IRAY:RENDER): 1.1 IRAY rend warn : Failed to determine NVIDIA CUDA driver version; iray can only run in CPU mode. Please update your NVIDIA driver (www.nvidia.com).
Iray INFO - module:category(IRAY:RENDER): 1.1 IRAY rend info : Using iray plugin version 4.0, build 231000.11582 n, 29 Apr 2015, nt-x86-64-vc11.
WARNING: dzneuraymgr.cpp(261): Iray WARNING - module:category(IRAY:RENDER): 1.1 IRAY rend warn : There is no GPU available to the iray renderer.
Iray INFO - module:category(BLEND:RENDER): 1.1 BLEND rend info : blend render (build 231000.11582, 29 Apr 2015) initialized
Iray INFO - module:category(IRAY_CLOUD_CLIENT:NETWORK): 1.1 IRAY_C net info : iray_cloud (build 231000.11582, 29 Apr 2015) initialized
WARNING: dzneuraymgr.cpp(261): Iray WARNING - module:category(IRT:RENDER): 1.1 IRT rend warn : Your NVIDIA driver API 'nvcuda' cannot be found. All GPUs will be disabled.
WARNING: 3DConnexion Plug-in Error: Could not create Device, CoCreateInstance failed
3D mouse support library could not be loaded.
WARNING: QFile::flush: No file engine. Is IODevice open?
The rest is a lot like that.
No OpenGL and Iray is not finding anything usable, either...
What video card?
No idea :D But 4.8 used to work!