lightroom crashes in 64-bit mode

[billyw]

Would appreciate some help pls. Realised that in 64-bit mode, computer crashes when loading up lightroom and if it survives loading, will crash on import or import very slowly but works fine (and quicker) in 32-bit.

Have tried the following which made no difference.
Upgraded from 2.4 to 2.5
pressed alt key while loading up and selected new catalogue
tried deleting lightroom preference file .com.adobe.lightroom2.plist

2.4GHz Intel Core 2 Duo iMac, 3 GB 667 Mhz DDR2 SDRAM (2+1)
Graphics ATI Radeon HD 26''
Leopard (latest version but not upgraded to snow leopard).
Computer works fine with everything else.
No other programs running at same time to compromise RAM etc.

Is my iMac just incapable of running lightroom in 64-bit mode? Would it be ok with Snow Leopard? Is there some other setting I should change to get it to work?

Many thanks for any advice you can give me.

Billy

 

[Victoria Bampton]

Hi Billy, welcome to the forum!

That sounds really odd. That's not an old iMac, so it should be ok. 3gb of RAM is probably a bit on the low side to be running as 64-bit - 4gb is generally the lower limit where you'll find a real benefit. Are your Leopard updates current?

 

[billyw]

Hi Victoria,
Many thanks for this. Yes, running leopard 1'.5.8 which is latest version. I'm a bit confused about the amount of RAM as system requirements say I only need 1GB and I've got triple that. I guess they often under-estimate but... I've made sure I run it with all other apps closed to maximise available RAM. I'll get an extra 1GB RAM anyway as I'm sure it will help it all run a bit quicker but a bit concerned this won't sort it out.
Thanks for your thoughts tho.
bw
Billy

 

[Victoria Bampton]

3gb will do nicely for the 32-bit mode, as you've noticed. It's just 64-bit that seems to run better with more RAM.