Re: large size and pdf-x output memory problems
I have done quite large posters, in many versions of Xara, I mean bigger than A0 and had only a few failed. OK it might take about 3 to 4 mins, to export but most did so why no fail for me? I have found that ver. 5 & 6 in Xara's Pro type of software is far more reliable and I have still ver. 6 in my hardrive and still use it regularly for PDF's export so you could delve into your older versions. Next thing instead of using custom size pages could you try exporting your PDF in standard page size and then scale up your output at the printers. Don't have Acro Reader on my H/drive so cant say/remember if it can be done there. If you have bitmaps in your drawing make sure that they can survive the scaling up, min. 100 dpi, better to keep to 150 dpi. Also try converting text to shapes before exporting and you can keep your real text in a hidden layer but use Acro Reader 1.4 don't go any higher as it will be exported as well making file larger. I am a bit confused with one statement you made in 2nd para. "The only thing I have tried is to output as RGB pdf and then take it into acrobat pro and export it as pdf-x." you can do this directly from which I would strongly recommend as you can have a lot more control if you you the Advanced Options button in the export dialogue. Please select either native or CMYK not RGB in the General tab and then you can go into the objects tab and sort out bitmap quality. If you select Commercial Printing radio button this will do everything automatically with bitmaps and flattening set to 300 dpi but if you are going to scale you will need to think about these rastered bitmap dpi.
A lot of the fails come down to Xara's RGB effects: feathering, shadows, transparencies, Live Effects, Blends and Colour Fills. If you can keep most of these out of your drawing or down to a minimum or use the cheats way by using layers again make a bitmap copy of an area where these take place and then hide your area using only the bitmap copy. I shouldn't have placed Blends in RGB effects as these are just plain vectors but when exported these become individual items taking a lot of calculation. Using layers is the way to a successful PDF where stacking order is import, so be mindful of groups as these are not recognised by PDF and are converted to Clipping masks which again along with Xara ClipView. If text is use then this must be a the top of the stack of objects/top layer and try and use vector objects as shadows or create bit map copy.
Please if you require any more help please come back and I will try and help as you should be able to have a useable PDF!.
Design is thinking made visual.
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