I am working with Photoshop 7.0. My OS is Windows XP. I scanned an image as line art. This works fine. I save it as a TIFF. Then I enlarge the image and convert it from Bitmap to Grayscale. Then I convert it to RGB color. I add color to a certain area. Then I save this image as a JPEG. It writes the JPEG format. Done.
However, when I try to re-open the file up in Photoshop or place it in a Pagemaker layout I receive the following error…"Unknown or invalid JPEG marker type is found". As a result I cannot open or place the file anywhere. I cannot even preview it ("No preview available"). I have wasted so much time on this project already.
I kept the TIFF file. But after several attempts at converting it to JPEG with the same result I actually started from scratch and rescanned the entire image, resized it and saved it as a TIFF file. I took this file and converted the image mode to grayscale and then to RGB color. I added the necessary color. Then I saved it as a JPEG. This seemed to work. But then I cannot preview, re-open or place the image. Same result.
Check that….I do have Imageready and did try to open the file in that program. I received this message…."Could not complete the operation because a compression error occurred."
I just tried different JPEG settings (i.e. medium and low) and the same result. I tried saving for web but the file is too big for the web. The size of the image fits a 20" by 20" area.
On one attempt to save it as JPEG in Medium setting I was able to save it and then reopen it. So then I converted the image mode to RGB Color. Then saved it again and was not able to reopen. Since that attempt I have had no luck reopening any of my attempts.
This is very strange. I have had Photoshop 7.0 for over a year now and have never had this problem before.
A question regarding the 30,000 pixel and 2 GB limit. How do I determine the number of pixels in the image? I suspect while not going over the 2 GB limit, I may have exceeded the 30,000 pixel limit.
I am just saving to a hard drive. I have deleted the preferences. Just in case I deleted them again and then tried to convert the TIFF to a JPEG and the same result. It saves it. I can right click on the file and go into properties, but I cannot open the file.
WTF! I have a similar problem, have read other posts with similar problems, but NO-One seems to know what the problem is! I am freaking out. 2 weeks ago I took some portraits. I uploaded them to my computer, everything fine, all viewable. I then saved the ones I wanted to keep in another folder as tiff’s. today I went to open some of the tiff’s, majority work fine, however there were 8 that would not open, error said "can not open because file is not a TIFF file" B.S.!! Fine, so I go back to my original jpg’s and try to open then, now the whole batch with the exception of just a couple give me the error "Invalid JPEG marker". What is the deal? Does anyone know what the answer to this problem is?
Jon – have you followed the advice from the previous responses?
The problem is on your hard drive or your system. You need to find what is corrupting your files (although the TIFF issue could be a mistakenly typed file extension).
I did a surface scan and that did not change the results.
I tried to open the file in IrfanView again. The message…."JPG decode error! JPEG datastream contains no image".
So I opened the original TIFF (Grayscale) in Irfanview and then changed it to a JPEG within that program. I also opened a second TIFF (RGB color) and changed it to a JPEG within Irfanview. Both IrfanView created JPEGs, open up in Photoshop and Windows Picture and Fax viewer. I can reopen both in IrfanView as well.
However, when I try to place the image in a Pagemaker layout it appears as a black box. I went the extra step and converted it to a pdf file and it still looks like a black box.
So it appears that one problem is solved and another created, or just half the original problem is solved.
Mike, I wish I had any more ideas, have followed your prob from the first. But you have the screwiest set of circumstances I’ve ever heard of. Actually seems impossible, some of the results you’re getting. So this is just an empathy post; I really don’t have any ideas, I’m afraid.