BETA: PowerArchiver 2023 - 22.10.02

[Pygalgia]

Hi,

I’m having the exact same problem when compressing large .iso’s to .7z files. Any luck fixing this?

thanks,
alex.

[jjarman]

Hello Alex,

I’m sorry to hear, yet also somewhat releived that I’m not the only one who experienced this.
I have not been able to resolve this issue yet.

spwolf was looking into the matter.
Not sure if he or she found anything though.

If anyone figures this out please update this thread.

Thanks!

[davidsplash]

its a problem with the 7zip.dll

[jjarman]

I know that this issue is related to 7-Zip (7z) only, so it makes sense that it is part of the 7zip.dll, but what does this mean for me as a user? Will it be fixed by Power Archiver soon or does that mean that it is an issue that the 7-Zip opensource project is working on, and Power Archiver needs to wait for them to fix this, then incorporate the new dll into their product? If the latter, does this mean a while before us users get a version without this issue? The reason I ask, is this is my primary use for the product and will affect whether or not the product is usable for my purposes. I appreciate any information you can provide.

Power Archiver seems like a wonderful app in all other respects. I’m already recommending it to my clients, for their purposes it will do everything they need, uncompress almost everything, and create new regualr zip files. For us power users it seems like a great tool as well, except for this one issue it has worked great.

Thanks for the help, it is apprecaited!!!

[spwolf]

Hi,

we are testing it right now to see where is the issue. We dont use Beta versions of 7zip but their official “stable” versions which are now behind their beta releases.

We will check it out more throughly and let you know. It is possible that this has been addressed in one of the newer 4.xx dll versions which we will start using with 9.5 release. But in any case, I will let you know once we find out more.

thanks,

[jjarman]

Thanks spwolf, I appreciate the information and help. Best of luck tracking down this issue.

[Pygalgia]

thanks for the updates.

alex.

[guido]

I have been testing with multiple ISO’s. All of them where above 4gb. One was even 8.1 GB.

They turned out fine. The only problem was that PA didn’t show the file inside. 7-Zip manager handled it fine.

Guido

[jjarman]

Am I understanding the results of your testing correcty?

Broken:
1. When 7z compressing large files in PowerArchiver, the status percent and status bar don’t work correctly.
2. When opening the large 7z files in PowerArchiver they appear empty.

Working:
1. The 7z files created by PowerArchiver are actually correct and not corrupted, and can be used and decompressed with the opensource 7-Zip Manager?

Further Questions:
1. Is this problem with all large files, or isolated to the compression of iso’s?
2. If so, does renaming the iso’s affect anything, or is it something about the data format itself?

Thanks for the information and test results.

[spwolf]

It seems to be problem between PowerArchiver and 7zip, when individual files inside archive are larger than 4 GB. Actual archive is created fine. We will check it out.

thanks,

[jjarman]

That makes sense.
Thanks again for the information, the response to this issue has been wonderful.

It is nice to know that there are companies out there like PowerArchiver that still care about their products and users. It shows, both in quality of product, and in response to issues.

Best of luck tracking this down!

Regards,
Josh

[spwolf]

Thanks for your kind words.

It seems that the issue is with 3.xx version of 7zip dll we use (last official release). There is nothing wrong with compression, but it seems that reading/listing/extracting single files larger than 4 GB inside of archive does not work properly. Actual reading/listing/extracting of archives larger than 4 GB works, as long as single files dont exceed this - so if you had 10 files at 2 GB inside an archive, it should work fine.

We will include newest 7zip 4.xx dll’s in upcoming 9.5 release, and add other 7zip features from that release (multivolume, as well as AES encryption).

thank you!

[jjarman]

I look forward to it.

[Stretchr]

@spwolf:

Thanks for your kind words.

It seems that the issue is with 3.xx version of 7zip dll we use (last official release). There is nothing wrong with compression, but it seems that reading/listing/extracting single files larger than 4 GB inside of archive does not work properly. Actual reading/listing/extracting of archives larger than 4 GB works, as long as single files dont exceed this - so if you had 10 files at 2 GB inside an archive, it should work fine.

We will include newest 7zip 4.xx dll’s in upcoming 9.5 release, and add other 7zip features from that release (multivolume, as well as AES encryption).

thank you!

I believe my 7z solid archive is being effected by this problem but my question is, until you’ve come out with the 9.5 version, how can I extract the archive? Within PA, it appears to be empty. When I try to extract to a directory, the new directory is created but remains empty. I need to access information in the archive but do not know how.

Thanks.
Stretchr

[jjarman]

You can use the free 7Zip manager to extract these files for now:
http://www.7-zip.org/
Although this program isn’t as good as PowerArchiver in my opinion, it will extract files from those apparenty empty 7z files.

I look forward to the next release of PowerArchiver resolving this issue as it truly is one of the very best archive managers available on the market.

Hope this helps you out.
Regards,
Joshua Jarman