I figured it out  but I do have a follow up question...  I answered my own question. If you have images or footage loaded into the Video Sequence Editor, it will only render the frames from that footage. There may be a way to circumvent this, but I don't know how to do that. At any rate, the frame I wanted to render was past the footage, so it rendered a blank frame. As far as I know, I have to get the footage out of the Video Sequencer in order to render the scene.   I found this answer when I went to find a backup of this file and the backup file opened to the Video Sequencing preset and I remembered this little tick. If someone knows how to circumvent this problem so I don't have to delete the footage, that would be great.    Original post:  I looked around to see if this question has already been asked and one fellow had the exact same issue, but was scolded for being too vague and the question was closed. I could understand his question and know his predicament and can only hope I can be specific enough here to ask the same question. I have a good bit of time invested in this blend file and I hope I won't have to redo it.   So, here's the situation:  1) I have a blend file with a lot of objects, materials, and textures, including two character rigs. I have a blocking run saved in the Action Editor of the Dopesheet and would like to render one of the key frames from it to act as a reference in another scene I'm setting up.   2) I have tried to render a single image file from this scene a) by selecting the Render Image selection from the Render menu in the 3D Viewport, b) by clicking the Image Render icon in the Render tab of the Object Properties window, and 3) by hitting the F12 button on my Macbook keyboard. None of these produce the result I'm looking for:  a single image of the keyframe from the scene in this file.  3) I have tried to render the single image in versions 2.661 and 2.71 of Blender as indicated in #2 and have achieved no different result.  4) The problem seems only to be with this file and no others that I checked.  5) I closed all applications on my computer and rebooted. No change with this file.  6) I have not had this issue with this file before. I do not have this issue with other files with the same scene (i.e., as described above with multiple objects, etc. -- same scene, shots are in different blend files)  7) The result I get (see link below for screenshot) the gray and white checkerboard that shows while an image is rendering.  The Screen I get when I try to render a single image file ()  8) Recently, I read a post in Blenderguru that made suggestions about changing settings in the Light Paths and Performance tabs to reduce render times. I made these changes in this particular file and other files. I have not had this same problem in the other files. In those files I can render the image with no problem. See link below for screenshot.  Light Path and Performance tabs in the Render Panel of the Object Properties window. ()  9) I recently installed Blender 2.71. I still have 2.661, so I tried the files in both versions of Blender. My other files will render, but the one in question won't. I get the result explained above. I have also tried to render it in the Blender Internal Engine -- same result.  10) I have tried to look over settings in the Render panel of the Object Properties window and in the User Preferences. I am not an expert user of Blender or a computer programmer, so most of the options are Greek to me. If I accidentally changed settings, I don't know which ones those would be.   11) If I can't find a solution, I will have to redo the 5 hours of blocking I already put into this, a scene I am quite happy with.  I've tried to be thorough and specific. If I haven't been, so be it. I really appreciate it if someone knows what I could do to fix this or has any suggestions.
Blender is rendering an older version of my project, not the most recent one. I have made it using the Blender Render but it does not want to render in cycles either. A black and grey screen is rendered as if everything is transparent. Checked general camera, lighting and compute devises in case I messed something up but I can't find anything. All my textures and objects look normal, does anybody know what is wrong or what to check?  Ok added link:
Let $p\in[1,\infty]$, $a\in\ell^\infty$ and $$T:\ell^p\to\ell^p\;,\;\;\;x\mapsto ax.$$ Note that $\left\|T\right\|=\left\|a\right\|_{\ell^\infty}$. It's easy to see that if $a\in\ell^1$, then $T$ is nuclear and hence compact.  Can we more generally conclude that $T$ is compact?  Assume $p&lt;\infty$. The intuitive approach would be to define $$T_n:\ell^p\to\ell^p\;,\;\;\;x\mapsto(a_1x_1,\ldots,a_nx_n,0,\ldots)$$ for $n\in\mathbb N$ and to show that $\left\|T_n-T\right\|\to0$. Now, $$\left\|(T_n-T)x\right\|^p=\sum_{i=n+1}^\infty|a_ix_i|^p\tag1$$ for all $x\in\ell^p$ and $n\in\mathbb N$. The right-hand side of $(1)$ clearly converges to $0$ as $n\to\infty$, but this only yields convergence in the strong operator topology. On the other hand, if $(a_n)_{n\in\mathbb N}$ would be nonincreasing and $a_n\to0$ (e.g. $a_n=\frac1n$), then $$\left\|(T_n-T)x\right\|^p\le|a_{n+1}|^p\left\|x\right\|_{\ell^p}^p\tag2$$ for all $x\in\ell^p$ and $n\in\mathbb N$ and we could immediately conclude $\left\|T_n-T\right\|\to0$. EDIT: Maybe the general result can be obtained from the convergence in strong operator topology (which holds by $(1)$) by noting that $\ell^p$ has the approximation property; but I'm not sure whether this is true. I have an array of Foo objects. How do I remove the second element of the array?  I need something similar to RemoveAt() but for a regular array. Is Kant's "noumenal self" argument on freedom flawed? Literal @YES not working in iOS 5 / Xcode 4.4 Concatenating string with space Encouraging software publishers to use StackExchange as support mechanism Is there a characterization of the nonconstant entire functions $f$ that satisfy $|f(z)|=1$ for all $|z|=1$?   Clearly, $f(z)=z^n$ works for all $n$. Also, it's not difficult to show that if $f$ is such an entire function, then $f$ must vanish somewhere inside the unit disk. What else can be said about those functions?  Thank you. The  tag doesn't appear to be very useful.  It's used in a variety of ways (for reading, writing, showing, transforming, compiling, translating, obfuscating, obtaining, ... source code) on 1747 questions right now, and doesn't appear to be adding any classification value to the site.  Can we get rid of it? Fantasy book series with non-human races and labyrinth I'm trying to identify fantasy book series I encountered some time ago. Here are things I remember:   it was a fantasy setting but with some s-f elements; with many worlds and possibility to travel between them; resembling  setting a little, the two main races were non-human and probably hostile to each other,  a labyrinth (?), which somehow played an important role in the plot, a protagonist was some kind of emissary and was sent on a mission to another worlds  time period: 80s - 90s    Does anyone know what it is the name of the series? Rotating image / marker image on Google map V3 There are several spells that require the target to be "humanoid" such as , , etc.  However, if the target is Polymorphed after that spell has been successful, then what happens?  Does the change in form to Beast end the spell effects? Does it suppress the spell until the correct form returns? Does it do something else? Why is this sentence correct?     She suggested that he go to the cinema.   I would definitely use goes instead of go. Prove $kf(x)+f'(x)=0 $ when conditions of Rolle's theorem are satisfied . Prove that if $f$ is differentiable on $ [a,b]$ and if $ f(a)=f(b)=0$ then for any real $k$ there is an $ x \in (a,b) $such that $$kf(x)+f'(x)=0 $$  As all the conditions of Rolle's theorem are satisfied one can say that there is at least one  $c \in (a,b) $ such that $f'(c) =0$ How should I proceed furthur ? How can I use this to get to the required equation ? Show that the following series of function defines a continuous differentiable function function in $\mathbb R$. $$\sum_{n=1}^{\infty}\frac{\sin (nx^2)}{1+n^3}.$$  We have , $|f_n(x)|=\left|\frac{\sin (nx^2)}{1+n^3}\right|\le \frac{1}{1+n^3}\le \frac{1}{n^3}=M_n \text{ (say) }$  As, $\sum M_n$ is convergent so, the given series is uniformly convergent. Also , each $f_n(x)$ is a continuous function in $\mathbb R$. So, the given series converges to a continuous function , say $f(x)$.  But how we can show that $f(x)$ is differentiable function ?  Please help... The binomial sum   $$s_n=\binom{n+1}{0}+\binom{n}{1}+\binom{n-1}{2}+\cdots$$   satisfies the Fibonacci relation.   I failed to prove that $\binom{n-k+1}{k}=\binom{n-k}{k}+\binom{n-k-1}{k}$... Any hints or suggestions? Which facility upgrade unlocks maneuver nodes in KSP has a weird case of the mono, while .  Also, that question is missing some content at the end: Word for "to make music" According to two questions  and  asked on this site earlier there exists a nice relation:  $$\frac1{n!} \left(\int_{0}^t\mathrm dt \; f(t)\right)^n = \int_{0}^t\mathrm dt_1 \int_{0}^{t_1}\mathrm dt_2 \cdots \int_{0}^{t_{n-1}}\mathrm dt_n\; f(t_1)\,f(t_2) \ldots f(t_n). $$  Unfrotunatly I am more interested in integrals of the form  $$\int_{0}^t\mathrm dt_1 \int_{0}^{t_1}\mathrm dt_2 \cdots \int_{0}^{t_{n-1}}\mathrm dt_n\; f(t_n). $$  Can it be somehow brought to an unary integral?  All I have figured out by now is that  $$\int_{0}^t\mathrm dt_1 \int_{0}^{t_1}\mathrm dt_2 \cdots \int_{0}^{t_{n-1}}\mathrm dt_n\; t_n^m = \frac{m!}{(m+n)!} t^{m+n} .$$ Groups in derived series are normal in the whole group I am considering a finitely generated, solvable group $G$ which has subexponential growth. Let $G=G_0\vartriangleright G_1\vartriangleright....\vartriangleright G_d\vartriangleright G_{d+1}=1$ denote the derived series of G.  It should be the case that $G_d$ is normal in $G$. Does anyone know why this is true? I don't know whether all of the assumptions above are necessary for the result.