DEMO Version sometimes appears

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marcovdlinden
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DEMO Version sometimes appears

Post by marcovdlinden »

We are getting calls from some customers that your "DEMO Version www.docu-track.com Tracker Software" shows in our application.

I've attached a screenshot, we use PXCV_DrawPageToDC to draw these images (with PXV_CommonRenderParameters pxvrm_Viewing)

The strange thing is, when they print (we use the same PXCV_DrawPageToDC but with the print PXV_CommonRenderParameters) it does not appear.

We can't reproduce this ourselves, but we have this appear for a few customers now.

Do you have any suggestions as what might be the cause, or what we could do to make it reproducible?
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Marco
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Stefan - PDF-XChange
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Re: DEMO Version sometimes appears

Post by Stefan - PDF-XChange »

Hello Marco,

Please try installing a copy of the latest build of our end user Viewer on one of your test machines - and see if you would be able to reproduce the problem after that. I suspect that you have a license key that was issued before build 196, and due to some changes from that build on older keys will not work properly, and need to be replaced:
https://www.pdf-xchange.com/newsletter/view/33
And installing a copy of the end user viewer will update the library files - and could cause problems with your own product.

Best,
Stefan
marcovdlinden
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Posts: 45
Joined: Thu May 06, 2010 7:40 am

Re: DEMO Version sometimes appears

Post by marcovdlinden »

Hi Stefan,

Could still not reproduce it, after the installation.

I did however check our 2 keys
We did update the viewer key (to PDF-XChange Viewer Pro SDK 2.5.199)
But we did not update our other SDK 4.0 key, would that also be necessary?
Marco
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Stefan - PDF-XChange
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Re: DEMO Version sometimes appears

Post by Stefan - PDF-XChange »

Hi Marco,

No, only the Viewer SDK keys had to be replaced after June 2011.
And when you say it's not a version conflict I am at a loss what could be causing this for some of your customers. :(
Could you please try to check with one of them and obtain as much info as possible as to what they did soon before the "DEMO" stamps started appearing and see if that will lead to a reproducible scenario that we can test.

Best,
Stefan
marcovdlinden
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Posts: 45
Joined: Thu May 06, 2010 7:40 am

Re: DEMO Version sometimes appears

Post by marcovdlinden »

We were able to access one of the PC's in question and get more info.

Apparently everything is ok at the start, but when they run print job with our software, it uses a lot of memory.
It looks like that at a certain point there is not enough memory anymore* and then the 'Demo message' appears.

* with not enough memory we mean, that there is no more free Physical RAM, but it's not really getting out of memory because the system starts swapping.

they were using an XP sp3 with 2gb memory.

Can you think of any reason why free memory affects the 'demo message'?
Marco
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Stefan - PDF-XChange
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Re: DEMO Version sometimes appears

Post by Stefan - PDF-XChange »

Hi Marco,

I spoke with one of my colleagues from the dev team and here's his reply:
32-bit applications have a limit of 2 Gb memory, so when there's an out of memory error anything could happen. Nevertheless it is very strange that you are getting valid results (except demo labels), and I don't think that the problem is in low memory (at least on our side).

Best,
Stefan