cURL must be enabled.
My mate Spock and I both find this to be illogical. A program cannot be 'sometimes buggy'. It either has bugs, or it doesn't. The fact that it "has always ended up working in the end", is simply an admission that you have been doing something "wrong" with the installation(s) when first installing... Unless of course you have had to modify the ozpost code itself to get things going, in which case you haven't helped anyone other than yourself by doing so.
This is logical.
It could be - Certainly seems that way at the moment.
If you could enable cURL and repost the link to a product showing the problem I'll see if I can give any further clues. However, I'm pretty confident that your problem is going to end up being something amiss with your input data - Do keep in mind that cURL must be enabled though. (The next release isn't going to make this an option).
Cheers
Rod
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