Assertion failed during save of slideshow settings

Question

Hi,
Great to be able to try out the new Lightroom version!
Here are two things I'm noticing:
There seem to be several issues with slideshow. When I try to change slideshow settings, "impromptu slideshow" stops working in all modes. Also, on occasion, when I try to save slideshow parameters (in the slideshow module), I get the following error message: "Unexpected error performing command: assertion failed!".
What I did was turning almost everything off in the slideshow, no border, cast shadow, guides, no borders, identity plate, rating stars, text overlays, color wash, intro/ending screens, then tried to save that.
The other issue is that it's significantly slower than my current Lightroom 2 version, as many people have already pointed out.
Am using a 4-core Vista 64 machine.

Answer 1

Hi Victoria,
Thanks very much for your quick reply and for looking into this. Here is a sequence that reliably reproduces it for me, after some trials, hopefully this is helpful:
Go to Library module, exit Lightroom 4
Start Lightroom 4 again (starts in Library module).
Switch to Slide show module
Make some changes to settings in the right panel (e. g. disable "Stroke Border") and save changes (Slideshow->Save Slideshow settings). Note: When I first did that, I unchecked all the boxes, except for "Slide Duration" and "Repeat").
Switch back to Library module.
Exit Lightroom and restart it (is in Library module now).
Click on "impromptu slide show" button in the toolbar. The slide show will start, but with different settings from what was saved earlier.
Exit out of slide show with ESC. Switch to Slideshow module.
You can see now that the settings are different from what was saved. Make some changes to settings in the right panel (e. g. ...) and try to save changes (Slideshow->Save Slideshow settings). I get an assertion failure when I do this.
Generally, when I exit Lightroom from the Slideshow module and come back, I see the previously saved settings. However, when I exit Lightroom from the Library module and restart it, I get different slideshow settings from what I last saved.
Also, it seems like "impromptu slideshow" stops working, once I visit the Slideshow module.
Once I saw Lightroom abend when I exited after getting the assertion - but I can't reproduce that. Here is the event that was generated:
Faulting application lightroom.exe, version 4.0.0.1, time stamp 0x4ef2621d, faulting module ntdll.dll, version 6.0.6002.18541, time stamp 0x4ec3e855, exception code 0xc0000374, fault offset 0x00000000000acb17, process id 0x59c, application start time 0x01ccd4c03f0b3450.