Jim Gordon MVP said:
We need to play detective. For starters, do the problem tabs appear the same
way on all macs or just on one computer in particular? Is it just one
workbook or is this happening on several workbooks?
I foolishy neglected to test the file on another computer. The other one uses
8.6 and I am using 10.2.6 but I should have done it anyway.
I have had the issue only with one workbook at a time and is has always been a
huge one, 13+ megabytes.
As I noted on this forum before, if Excel is opened first and the file is the
opened from within Excel, it will be fine as will subsequent files that are
opened.
I now noticed that if the file is double clicked to start Excel the blank sheet
tabs (not really blank, just white text) will appear as with all subsequent
files opened. When Excel is quit and restarted, it's back to normal as long as
the suspect file is not double clicked first.
Another finding is that the file grew rather large. It started as 13 meg and
after is was saved as a sylk file I noticed it was 29 meg.
I finally corrected it by getting rid of all formulas and named cells. I
created a new file, copied only the values to it one column at a time (50,000
rows) and then recreated and copied the formulas down.
This fixed the file - so far.
It is still very slow, 20 minutes to calculate seems way too slow. As I said
there are 50,000 rows by 20 columns. Formulas in five columns are fairly
complex but it is still pretty bad as for speed.
OSX.2.6 with 1gig ram and 1gHz chip.