Question

I’m having problems translating AutoCAD DWGi files I received via Email. PowerCADD gives me an warning dialog “ an error occurred while loading the file, Increase memory size” (or similar errors) but I’m still unable to translate the file even after increasing the memory (in older versions of PowerCADD in Mac OSi 9). What do I do?

Requirements

Minimum: Any version of PowerCADD and the PowerDWG Translator External
Recommended: PowerCADD v7 and Mac OS X Tiger or newer

Background

All email file attachments are encoded / chopped into smaller bits to be transferred through the internet. It’s very common for certain types of attachments like DWG, DXFi , spread sheets or word processing files to be damaged during that encoding or decoding process if they were not compressed before being emailed.

In real world plain english terms, it's like trying to send something through the Postal Service. We wouldn't expect a glass vase to arrive undamaged if all we did was stick a stamp on it and drop it in mail. Rather, we'd take the time to package the item correctly to protect it during shipping. While it's possible the packaging may bet damaged, the contents is protected and arrives in one piece.

Sending an email attachment without compressing it first is much like that. Compressing the files first has two distinct benefits:

1. makes the file smaller for faster and more efficient transfers
2. serves as the packaging that protects the file inside to avoid corruption

What To Do

There is a simple two step test:

1. if the file was received by email and was uncompressed
or
2. In OS 9 you’ve increased the memory allocation to PowerCADD but still receive the “... Increase memory...” error dialog

Then in +90% of all cases the file was corrupted during internet transfer and the file is unusable. Rather than beating a dead horse, it faster to have the file compressed and resent as described below.

Compressing the file

Windows Users:
If the person sending the file is a Windows user, then they should do this:

1. compress the file using PKZip or WinZip ( common utilities on Windows Computers)
2. Do not make the file 'self extracting' (I.e. do not make a *.EXE file), just make a plain *.zip file Note: mac's can't run a *.exe file but can handle *.zip files just fine
3. Attach the *.zip file to the email and resend it.

Mac Users:
If the person sending the file is a Mac user, then they should do this:

1. compress the file using Drop Stuff (Shareware) or Stuffit Deluxe (full payware commercial application)
2. attach the *.sit file to the email and send it.

Note: they can also save the file as an *.sea (self extracting archive)

These related articles on our website also contain information on compressing (zipping, stuffing, archiving) files
When I zip files windows users can't open it
Mac OS X Panther: Compressing (zipping) files for Windows Users

Receiving the files

A *.zip file from Windows user:
When you receive a *.zip file from a Windows user you have two choices to expand it and access the *.dwg file:

1. Drag and Drop the *.zip file onto the Stuffit Expander Icon(you will need the registered version of stuffit expander or the full version of Stuffit Deluxe)
or
2. Use a shareware utility like ZipIT! to expand the file by a simple and Drag and drop of the *.zip file onto the ZipIT icon
   a copy of ZipIT can be downloaded from this link http://www.maczipit.com/
or
3. In Mac OS X Panther, Tiger or newer, simply double click the file and Mac OS X can extract the contents of the zip archive

A *.sit or *.sea file from Mac user:
When you receive a *.sit (or *.sea) file from a Mac User you have two choices to expand it and access the *.dwg file:

1. Drag and Drop the archive onto Stuffit Expander
or
2. Double click the file to expand it if it’s a *.sea file

After you've expanded the compressed file, you should be able to open the *.dwg file using the PowerCADD, PowerDWG Translator.

If you’re still unable to process the *.dwg file there may be other issues at play and you may want to take advantage of our File Translation Services.

We hope that helps
caddpower.com

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