How recover an aia corrupted file?

[aiotech]

Hello guys, I was working on my project, it is quite big with 7 screens and 3015 blocks. I was cutting some parts and modifying others, when i opened the Navigator screen I did not see any block and received a message saying that the blocks do not load properly. I opened the aia file using 7zip and I see the 2 files related to the Navigator have a different size compared with the previous release from which I started my modifications, so I tryed to make an aia substituting the corrupted files but when I try to upload the aia in AI@ it does not recognize it as a valid aia. Any help or suggestion? I lost 422 blocks I do not wanto to put again by hands and also the designer gui is quite complex.

[Anke]

The blocks area did not load properly. Changes to the blocks for screen 5475942398296064_menu will not be saved

My way of doing it Notepad++ Install xml plugin 7Zip (no need to rename aia to zip etc) Loading the project in MIT Check count of blocks for the affected screen Check count of <block in *.bky file [bild] Search for in this case for block 4977 (this is where the first issue starts and it might be more) ^(.*?<block ){4977}\K [bild] And as mention above [bild] And you are done.. Edited, Knowing that it is an extension that is missing then we can follow this

[aiotech]

thanks Anke, may you explain a little better?

[Taifun]

@aiotech

the blocks do not load properly

Restart from your latest backup
Taifun

[aiotech]

Ok, in my case the solution did not work simply because the file was too corrupted, about 2K byte shorter then the right one. Also the first copule of files I trued to use to repair the aia were corrupted so AI2 did not recoglize the aia as valid. But the corrupted screen did not change for a long time so I tryed with an older aia and then working with 7zip to change the files inside worked and AI2 recognized it as a valid aia. Unfortinately I can not give any help to say what operation I did that may have corrupted the file, I can say that i did not have any AI2 error between the last working release and the newest but I think there should be a bug somewhere in AI2.

[TIMAI2]

Possibly caused by switching aia back and forth between your offline AppInventor and proper AI2 ?

[aiotech]

No I was working only on AI2 online at the moment.

[aiotech]

In general I have 2 working copies for AI2 online and offline and I regularly check if works also with AI2 Offline.

[Boban]

Can you share your broken aia so I can see if I can do something with it

[aiotech]

Yes, I solved that problem but now it appears on Screen1.
AudioGuideAlesR0S7.aia (5.7 MB)

[Boban]

Try this one AudioGuideAlesR0S7_0.aia (5.7 MB)

This block does not exist in MIT there of the error..

[aiotech]

yes, now AI2 loads Screen1 blocks correctly and the project seems to be working, I think that block comes from AI2Offline. I did not check before if it existed in AI2, I knew I hve to set properly some parameters on the Designer (for the app) that differs from AI2 but was not aware on difference in blocks. Thanks a lot Boban.