No...you don't HAVE to delete cookies to fix the picture problem.
Are any of you out there are having the same issues that I am?..with uploading pictures from your hard drive to blog posts??? Well, I went out to Mr. Google and posed my question/problem and I was brought back to Blogger "help". This what Blogger Help suggested. This suggestion did help me.
There are two rectangles on the far left of the bar where you can decide font and size and color, etc. The two rectangles you need to locate are "compose" and "HTML". Up until now...I've always posted to my blog, in the "Compose" mode. And, up until a week or so ago, I was able to upload pics from my hard drive while in this mode. Now I can't. But, if I click on the "HTML" mode, I can! YAY!!. One problem and the pain of it, is that I have to switch back to "Compose" mode to actually write the post. And, another problem is, I'm not exactly sure where the pictures are going to come up within the post. But, it's workable.
Blogger said that this problem is mostly with users of Explorer. They haven't been aware of this problem with Google Chrome or FireFox. They are in the process of trying to remedy the problem all together. But, in the past, I've noticed that problems can take "awhile" to get fixed. I don't want to complain too loudly, tho. I LOVE Blogs, Blogging and its a wonderful FREE service (for the most part). I'm grateful for all that goes into keeping this wonderful form of communication alive, even if it has glitches now and then. =)
Maybe you have a better option...please, share if you do? =)
Oh, and PS...my regular email server has been down for almost 24 hours..ugh =(. So I might not have answered all of your comments from my last blog post. I'm hoping that gets remedied soon too.