Mac OS X “PDFsam is damaged and can’t be opened”
Hi Mac users,
some of you reported the “PDFsam is damaged and can’t be opened” error when trying to install the PDF Split And Merge dmg package. After some investigation and users feedback I can finally write what is causing that. The issue is caused by a new feature of Mountain Lion and OS X Lion v10.7.5, called Gatekeeper which “help protect your Mac from malware and misbehaving apps downloaded from the Internet”. It does that by preventing you from launching apps that are not downloaded from the Mac App Store which is “The safest and most reliable place to download and install apps”. Now, assuming you still want to install PDF Split And Merge even if you didn’t download it from the “most reliable place”, what can you do? As sorice pointed out you have to:
- Open Gatekeeper settings located in “System Preferences > Security & Privacy”
- Set “Allow applications downloaded from:” to “Anywhere” and confirm by pressing “Allow From Anywhere”
- Launch Pdf Split And Merge
- Once PDF Split And Merge is successfully launched, you can set back Gatekeeper option to whatever you want
Some more information can be found here
Merge page selection
Merge page selection
Hi, here is a simple tip to remind you how page selection works. When merging pdf files you’ll often need to merge only a subset of the document (a chapter, some pages..). PDFsam supports page selection in the form of comma separated values where they can be single pages or page ranges. Page numbers cannot be duplicated and page ranges cannot intersect, a page range with open end is also supported (Ex. 10- means from page ten till the end of the document). To set the selection on a pdf input document you want to merge, you can double click the page selection cell and input some valid page range.
Examples of valid page selections:
2,4,7-20,25-
10,6,30-35
Examples of invalid page selections:
2,2,4,5-20
2-10,5-15
Wiki reminder
Hi everybody,
I want to remind you about the pdfsam HowTo wiki page here. If you have to merge pdf documents or split them and you don’t seem to figure out all the available options, take a look at the Wiki to have a brief description of them.
OutOfMemory tutorial
Hi everybody,
I updated the Wiki adding a simple tutorial on how to modify the amount of memory that pdfsam can use to minimize OutOfMemory errors.
Here is the link.
