SWAMP, Thanks for the information and advice

I think a site like hardwarecentral should provide a lot of information for me Thanks again.......... Arnold

First of all I'd like to thank the two previous respondents for their comments.
And thank you SWAMP for your constructive suggestion which I shall follow.
In addition, could you please suggest tutorials for the reformatting of the hard drive and installing of the OS.

Thanks Retrocity for your suggestions........
It was in fact KPT 3 which caused the freeze.

Ctrl + M then Esc de-freezed Photoshop (in my particular case)

Many thanks to everybody, especially Renderosity for this facility.

Trust me to try to use the program incorrectly.....typical!! Thank you very much PhilC for your help.

The Adobe Forum has provided me with the answer.....in case anyone else has the same problem........... "It has been reported that the problem with Lighting Effects presets are resolved when re-enabling indexing for the Lighting Styles folder. How to check your disk indexing: In Explorer, find the folder in which Photoshop is installed, then find the subfolder Plugins>Filters>Lighting Styles. Right-click this folder, and choose Properties. Under the General tab, click Advanced, then check the box that says 'Index this folder for faster search' (or similar). Reboot and check your Lighting Presets in Photoshop."

Thanks Rayraz & Bulldawg66 I suspected I might get the suggestion to track an object with the camera..............my problem in this particular scene is that the camera is moving level over low ground (camera pointing forward), then rising up above a mountain (camera pointing down), then dropping down to low ground (camera pointing forward), and the reverse on the return journey. So is it possible to track an object when there's all this camera gyration going on?

Thanks to Doublecrash, Rayraz and Jaymonjay...........for your suggestions. I hope one day I'll be sufficiently experienced to help a newbe too. Sincere thanks to you all and to Renderosity for the opportunity to come into contact with so many knowledgeable kind people. Arnold

As a newbe with only 6 weeks experience of Bryce, I have to say how impressed I am with your models I'm fascinated to know how the elongated "tulip shape" glass is modelled as I just can't see it in my mind's eye. What does HDRI stand for and how is it done (I realise it is the reflection of an external scene on a reflective object) If I'm being too cheeky, please tell me to mind my own business! The trouble is I'm yet another poor soul addicted to Bryce, who just can't wait to be able to create stuff like your majestic glassware. Arnold

Yes...............Your advice worked That's another 'brick' into my learning bryce wall Many thanks for all your replies Arnold

Thank you Aldaron & AgentSmith for what, at first glance, could be the cause of the problem. I'll let you all know how I get on. Arnold

No...........The labels aren't grouped together I'll certainly try saving the list of 'textures' as suggested by Scott Thank You

Yes..........each .jpg is saved with an individual name.