I will request beta version from support site.

Sorry. forgot to save the project before compressing. New one is attached.

Sample application is attached. Reference GdPicture v 9.2.4 in "Framework 3.5" folder where GdPicture is installed (C:\Program Files (x86)\GdPicture.NET 9\Redist\Framework 3.5). Copy sample file from previous post to: C:\GdPictureIssue.tif For resulting files, create the following director...

This is a sample code - .NET 4.0 console application with reference to GdPicture 9.2.4 from .NET 3.5 folder in your installation. Sample TIF source file is attached - every similar file should work. I have changed the code to use single source file in order to be very easy to setup your environment....

It could be very time consuming creating such application. As I said, I have this exception from time to time. When I hit the exception, all my 4 threads are at this call - none of them passed to the next statement. And when this happens (probably most of the times), this is first 4 calls (because o...

Hi, Please ignore this text "I think that every time I start the test with MaxDegreeOfParallelism = 1 (or simple for loop instead of Threads/Tasks), only the second file becomes 4,85 KB." - It is normal because one of the files was different than all others. Only the problem with "som...

Hi again, I'm faced with weird GdPicture 9.2.4 behavior. In multithreading environment I want to convert some files to 8bb 216. Most of the files are converted normally but some of them are not - they are converted to different sizes compared to most of the resulting files. In my tests, source files...

Hello, I'm using GdPicture 9.2.4 and from time to time i get the following exception when calling CreateGdPictureImageFromFile : "AccessViolationException crossed the native/managed boundary - Attempted to read or write protected memory. This is often an indication that other memory is corrupt....

That was really fast response...

IsBlank() modifies the image - this is unacceptable. When I pass 8 bit image to it, after execution of IsBlank and saving the image, now it is suddenly 24 bit and about 3 times bigger compared to real LZW 8 bit image. This is a very simple code that can reproduce the problem (all crazy checks for Gd...

And this is the preview of one of the pages in previously attached file for which IsBlank() returns true.

I have tried newest GdPicture version 9.1.0.3 and it still reports "false positives" for IsBlank(). Attached file contains 17 pages. Some of them are really blank but most are not. Is this normal behavior ?

And this is a fast preview of attached "BlankErrors.zip" in my previous post.

I don't know how sophisticated IsBlank() is, but what about these two images in attached file - for one of them IsBlank() returns "true", for other one returns "false". This is the reason we cannot use IsBlank() at all... GdPicture 9.

GdPicture v9: When I try to call the following sequence on GdPictureImaging instance: TiffCreateMultiPageFromFile(string); ConvertTo1BppAT(int); TiffSaveMultiPageToFile(int, string, TiffCompression); PdfCreateFromMultipageTIFF(int ImageID, string PdfFileDest, bool PDFA, string Title, string Author, ...