How to recover a tif damaged mcdx file

[JTrend]

I had an mcdx file which opened with no errors in Mathcad prime. However, after i added 2 tif images to the file, the file won't open

and mathcad prime (windows 7 64bits) gives me this error message "The file type is not supported".

I opened the file in a text editor and renamed all the occurences of "tif" to "png", but this did not fix the problem.

The image files are kept in what appears to be a virtual folder and thus i was not able to change the image files externally to match the png entries in the mcdx file.

How can i recover or fix this file ?

[VladimirN]

Hello!

You need to contact technical support PTC. Create a new "Case" for your problem here: http://www.ptc.com/appserver/cs/case/case_logger.jsp

P.S. Could you attach a file ".mcdx" with an error?

[JTrend]

I currently don't have an active maintenance agreement with PTC, so I am not able to contact

technical support PTC, yet.

I can add that the tif file is a photoshop lzw compressed(5X) alias multilayer v1.1 Tiff.

here is the exif of the file:

---- System ----
File Size : 22 kB
File Permissions : rw-rw-rw-
---- File ----
File Type : TIFF
MIME Type : image/tiff
Exif Byte Order : Little-endian (Intel, II)
---- IFD0 ----
Subfile Type : Full-resolution Image
Image Width : 336
Image Height : 75
Bits Per Sample : 8 8 8 8
Compression : LZW
Photometric Interpretation : RGB
Strip Offsets : (Binary data 43 bytes, use -b option to extract)
Orientation : Horizontal (normal)
Samples Per Pixel : 4
Rows Per Strip : 9
Strip Byte Counts : (Binary data 42 bytes, use -b option to extract)
X Resolution : 96.012
Y Resolution : 96.012
Planar Configuration : Chunky
X Position : 0
Y Position : 0
Resolution Unit : inches
Page Number : 0 0
Software : Alias MultiLayer TIFF V1.1
Host Computer : 001, 001, ffffffff, 001, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000
Predictor : Horizontal differencing
Extra Samples : Unassociated Alpha
Sample Format : Unsigned; Unsigned; Unsigned; Unsigned
Alias Layer Metadata : 001, 001, ffffffff, 001, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000
---- SubIFD ----
Subfile Type : Full-resolution Image
Image Width : 160
Image Height : 35
Bits Per Sample : 8 8 8
Compression : LZW
Photometric Interpretation : RGB
Strip Offsets : 16381 19642
Orientation : Horizontal (normal)
Samples Per Pixel : 3
Rows Per Strip : 25
Strip Byte Counts : 3261 1293
X Resolution : 96
Y Resolution : 96
Planar Configuration : Chunky
Page Name : Thumbnail
Resolution Unit : inches
Predictor : Horizontal differencing
Sample Format : Unsigned; Unsigned; Unsigned; Unsigned
---- Composite ----
Image Size : 336x75

Also, I have attached an example .mcdx file with the said tiff file which generates the same error.

If you need more info let me know....

[VladimirN]

John,

I have the same error appears in Mathcad Prime 1.0: "The file type is not supported". I have created new "Case" for technical support PTC with this error.

[mzeftel]

John and Vladimir,

That issue has been reported and is being fixed for Mathcad Prime 2.0. The issue is that Mathcad Prime 1.0 recognizes TIFF but not TIF. A developer suggests that you can open the file in WinZip, edit mathcad\footer.xml file and replace "tif" by "tiff", then let WinZip repackage the file.

Mona

[VladimirN]

Thanks, Mona!

I also received the following reply from tech support PTC: "... that Mathcad is expects the extension to have."tiff"".

[JTrend]

Mona,

Thank you...

The fix you provided works. However, I have not been able to recover my file yet.

Previously, I used Notepad to edit the mcdx file and it altered the file (made all binary 0's into spaces).

I was able to convert all 0's back to spaces in the text areas but in the compressed areas there appears to be no way for one to tell whether a hex 20 is legit or not. So, I am currently stuck.

[mzeftel]

John,

If you have the original version of your file, you can edit it in Notepad or any text editor, as long as you save it as UTF-8.

I hope this helps,

Mona

[VladimirN]

Mona,

It may be necessary to add the format "TIF" in the list of supported graphics file that can be inserted into the document Mathcad Prime?

[mzeftel]

Yes, we have fixed this issue for Mathcad Prime 2.0, when it releases.

Mona

[VladimirN]

Thanks!

[ptc-4581994]

please i have the same problem....i use mathcad prime 1.0 ...and it;s says file tipe not suported....why? i don't know...i tried to open with winzip...but when i edid foot...doesen;t apear any "tif" to replace with tiff...sory for my english...can you help me? how do i attach here the file...maybe you can fix my work..i realy need it.thanks..please wrote back

[mzeftel]

Edi,

I can open your file in Mathcad Prime 2.0 so I suggest you upgrade to Mathcad Prime 2.0. Unfortunately, it is too time-consuming for a developer to fix the file in Mathcad Prime 1.0.

You can download the trial version of Mathcad Prime 2.0 from http://www.ptc.com/product/mathcad/free-trial/. Mathcad Prime 2.0 does not create corrupted worksheets.

I've also attached a PDF of your worksheet, in case that's helpful.

I hope this helps,

Mona

[ptc-4581994]

thanks very much...it's very helpful...i will download mathcad prime 2.0....i'm a student sow it realy help this program..and 30 days it's okei..because i finish the school before the trial expires:) thanks againn!!!!!!!